What is database design?
The overall structure of a database is what we call database design. Before creating a database one must design a database that different anomalies. Anomalies like redundancy and must come up with a optimized database design for efficient use.
Design of the database (Database Design) refers to a given application environment, optimize the structure of the database, the database and applications, which can efficiently store data to meet the application needs of various user information needs and processing requirements). At www. myelibrary.net.In you can clearly understand what is the database design.
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Answer . Data base is a list of information given with details as needed. It can also generate and distribute to users some tables and graphs. It can be password and access level protected. . Answer . Entering information and numbers, and the calculations of those numbers.
This is a very broad question, especially in that HIPAA strives to be "transparent" in that it will not define what methodology is acceptable, but rather, will tell you how to ascertain if your choice is properly made. There is no particular technology described under HIPAA. The relationship between… DB design and HIPAA is that, if HIPAA applies to the company who owns or uses the database, then the database (and lots else) much be created in such a manner that it allows for compliance with this law. As for DB design, the following factors will have a somewhat unique effect: . Role Based access. While not a requirement under HIPAA, it turns out that some parties may access some data and others may not. Your design should take this into account. . Protected Health Information (PHI). Access to certain fields (PHI) may be restricted, and you'll need to show the steps you took to ensure this information is not released, either accidentally or through foul play. You may also need to track legal access to PHI. . Archiving. HIPAA requires archival storage of data, but it doesn't say how long, depending instead on "best practices". I'd make this selectable, and I'd back up my reasoning for this in my documentation. . Disaster Planning and Recovery. HIPAA requires that you maintain backups in such a manner that a disaster will neither destroy or limit access to live or archival data for any longer than need be. How long is not stated -- see Risk Assessment. . "Break Glass" initiative. HIPAA states that it does not sanction failures in delivery of health care as a result of implementing this law. In this case, it means you can lock down PHI based on roles, or secure in any number of ways, but if a doctor in an ER needs that patient information, there must be a means of overriding security and (a) allowing access to critical PHI as well as (b) tracking that abnormal access. In other words, in an emergency, you need to be able to break the glass and get to the PHI if you need it. . Risk Assessment. HIPAA enforcement focuses on intent and due dilligence. Even if you make a mistake, it'll go a lot easier on you if you've researched your decisions and documented them in a RIsk Assessment. This is a pretty formal procedure and, if you haven't done one before, consider getting help. This of course isn't all. COnsidering the scope of HIPAA, it's easy to see that all the possible changes in database design wouldn't even fit into a thesis, much less an online response. http://wiki.answers.com/Q/User:Cjonb 18:03, 3 Jun 2008 (UTC) ( Full Answer )
This is a very broad question. I'll try to present different areas for you to consider when designing a database.. 1. What is the database program and what is the OS it will reside on? 2. What is the scope of the database? Small (100 tables), medium (500 tables), large (1000+ tables and maybe a T…erabyte of data?) 3. What type of data needs to be stored? 4. You'll need to know the hierarchy, related data (to make relationships between the tables), nature of the data within the tables to properly size the tables for future growth.. Now, if you don't have all the up-front information, you can always create the database with what you do know. However, realize that later you may have to restructure, recreate the tables larger and copy the data or it may be easier just to recreate the database. If you need to do this, you can export the data if you have any that needs saved. If on the same node, you can do this table to table or by flat files. Table to table, you will have to disable auditing and any constraints, they reenable when finished. If you insert by flat files, it is faster and you will not have to disable.. There is a lot to designing, updating and maintaining a database. ( Full Answer )
Answer . Logical database design : . ensuring, via normalisation procedures and the definition of integrity rules, that the stored database will be non-redundant and properly connected; . Physical database design : . specifying how database records are stored, accessed and related to ensure ad…equate performance. . Answer . What is logical database designer The major role of logical database design is to transform the combined, reconciled data specifications into basic or atomic elements following the well established rules for well structures data specifications. With a complete logical database design in place an analyst begins to specify the logic of the particular computer programs and queries needed to maintain and report the database content. The person who maintain or responsible to perform the above task is known as Logical Database designer. ( Full Answer )
IBM Infosphere Data Architect, CA Erwin, Microsoft Access GUI are examples of physical database designer.
This position takes the business requirements and models a database based on the business's needs.. Does the database need to be in real-time? What kind of data will it hold? Sensitive?. There's hundreds of factors that determine how the database is designed, updated, protected. Each business is d…ifferent. ( Full Answer )
It is designed to make the process as smooth as possible. You cansign up for your next trip through this database.
Database Design is the database structure that will be used as plan to store and manage data. The database management system (DBMS) is the software used to implement a database design. Modern database and applications development software is so easy to use that many people can quickly learn to imp…lement a simple database and develop simple applications within a week or so, without giving design much thought. As data and reporting requirements become more complex, those same people will simply (and quickly!) produce the required data by incorrectly adding more columns of tables to the database. That's how data redundancies and all their attendant anomalies develop, thus reducing the "database" and its applications to a status worse than useless. The following are basically the reasons for doing database design: â¢ Good application programs can't overcome bad database designs. â¢ The existence of a DBMS does not guarantee good data management, nor does it ensure that the database will be able to generate correct and timely information. â¢ Ultimately, the end user and the designer decide what data will be stored in the database. ( Full Answer )
Well, there are actually FIVE (or even SIX, according to some..) but the first three are the most commonly cited parts of normalization.\n \n1) Identification of data and grouping in to logical units (e.g. fields and tables)\n \n2) Establishing key values for each table\n \n3) Analyzing relationship…s and eliminating non-key dependencies\n \n. \nA database that is in "Third Normal Form" is usually pretty correct, logically speaking. ( Full Answer )
DBMS is Database management system .Database design is very important in DBMS, It serves as a foundation of DBMS.
hmm, I start to think what am will doing with database, usually I write firts all my idea on a paper and when it ready to build, I use my database application.
A properly designed database could mean many things. Essentially, it all depends on what kind of database a user / webmaster / etc is looking for. A table (In a database) should have a correct number of collumns. Traditionally, the names of these collumns should be lowercased (But doesn't have to be…). A table (In a database) should have a primary key collumn. A primary key is used to uniquely identify each "row". No two rows cannot have the same primary key - it is unacceptable - therefore no two rows can be mixed up. This also cures many problems people may find in the future. In website database table values, "yes" and "no" should be replaced with boolean values: TRUE or FALSE, or even 1 and 0. When working with sensitive information, it's a good option to encrypt it somehow - You never know; someone may hack into the system unnexpectedly. Passwords are good examples of values that should be encrypted. There are a number of many things that will make a database effective and smooth, but it is ultimately up to the creator and modifier of the database to decide. ( Full Answer )
Very good question! A business rule is just as it states. Lets take a look at a really simple example first; Let say for example a business has a RULE that on its web site when you are filling out a form that the First Name field can only contain 20 characters, that's the rule! In the database you w…ould apply a constraint (some might do this at program level) that permits the First Name field to only contain 20 character. Now business rules typically go MUCH deeper than that. Business rules in an application, or program simply represent constraints or processes that you put in place in order to comply with the rules set out by the business. These rules can be corporate rules or simply limitations, or constraints that yield the appropriat outcome as setup in the scope of work (The technical document that tells you what your program needs to do, how it is to look, how end users are to interact with it, ect). If you need more detail please ask. Jeff ( Full Answer )
A database designer in simple terms designs the database layer of the eventual application. Like the initial crew on a home build site the database designer (architect) is responsible for laying the foundation of the project.. The architectural structure and integrity of the database is one of the …most important key elements to insuring a solid application build. While the application layer can be re-worked easily the database layer can not. Many attempt changing and molding the database to fit a 'floating' or changing requirements vision however this always turns into a mess.. Without a proper FOUNDATION (the database in this case) the application will ultimately fail to meet the performance and or functional requirements of the project and often will cause the entire project to fail.. In closing; the GOAL of the database architect is to construct a database environment that maintains its data elements reliably, provide a high performance architecture that will scale with the business model, provide a construct in which data integrity is maintained, and employ best practices to insure a stable and secure environment. ( Full Answer )
There are two approaches for developing any database, the top-down method and the bottom-up method. While these approaches appear radically different, they share the common goal of uniting a system by describing all of the interaction between the processes
A database designer is a person who specifies how a database records are stored, accessed and related to make sure there is adequate performance!
Depends on the design tool, there are MANY design tools and they all have some similar characteristics and some unique ones as well.\n. \nFor the most part design tools help you design a physical database using a visual representation.\n. \nie: Graphics that you can drag around, and connect that w…ill result in the code required to generate the resulting database. ( Full Answer )
This is quite an elemental question. Think about it- what would be termed atomic? One that cannot be divided, as from its Greek definition. Atomic values in a relational database mean that they cannot be further divided, according to domain rules defining that attribute . An attribute is a column… in the table that people normally think of as a relational database, and the notion is pretty correct. Domain rules define what data and its type can go into a column, and others are inadmissible. For instance, let's say that the database of a particular bank is organized as a set of tables, that is it is relational in nature, and one particular table lists the details of all account holders with the bank. All these details can reasonably form the attributes of the bank's customers, and can therefore be allowed to represent columns in this table. Suppose we have a column that holds the account numbers of the customers, and the domain rule defines that an entry in this column must necessarily be a non-negative, non-zero, integer. By this rule, 2453536 is an atomic value, whereas No. 10, Bowers Avenue is not, since the latter can be split further, and it also does not satisfy the domain rules. ( Full Answer )
Database designers have many responsibilities related to theirjobs. The main responsibilities include gathering information andinputting it in tables they have created.
Designers design the original database. That is an extensiveprocess, including working out the structures, doing up specialdiagrams, choosing the correct software and computers to use andother things. Finally the database will be created. The job of theadministrator is to look after the database. Th…e administratorlooks after things like security, backups, providing services tothe users, updating data and maintaining the database. Thedesigner's role is mainly before the database comes into use andthe administrator looks after the database when it does come intouse. ( Full Answer )
Once you have the list of Business requirements ; you come up with a logical layout of the application using the High level document. using these documents functional specification documents is frozen. for logical database design we use the functional specification, High level design and then the bu…siness requirements list. Based on the high level design we create place holders ; these place holders can be referred to as columns; now group these place holders all similar ones are grouped as a table.... and so on... then you need to establish relationships between them; make sure it conforms to rdbms standards, then normalize the data etc etc... The best would be give me a requirement which you feel comfortable and will help you to design a database... lets work together :) ( Full Answer )
1. Identify the Tables. 2. Determine the primary keys. 3. Determine the additional fields. 4. Determine relationships among the tables. 5. Determine data types for the fields. 6. Identify and remove any unwanted redundancy. 7. Determine a location for the database. The database you have designed wil…l be stored in a single file. You need to determine a location in which to store the file. ( Full Answer )
Engineer requirements should be higher, on theapplication of large databases to achieve proficiency orproficiency level, so the relatively low level of developmentengineers database, the cost is lower. Data architects, generalbusiness needs one or two. Of employment database developmentengineer is t…he most extensive. Here are some cases for referenceonly. (Www.myelibrary.net) ( Full Answer )
I shall give you a solution to what i think it is, if i am wrong, post back with further queries. First of all what tables you need depend entirley on what information your company is interested in retaining. I will assume all and you can delete as nesseccary First of all there should be a person an…d a product table: PERSON (person_ID*, name, start_date, end_date) PRODUCT (product_ID*, name, description, price, colour, weight, size, stock, start_date, end_date) //add more fields as nesseccary if you want to keep track of your staff make a staff person table: STAFF_PERSON (sp_ID*, staff_ID, person_ID, start_date, end_date) //assuming a staff table exists already Then you are going to want a customer table: CUSTOMER (customer_ID*, person_ID, name, start_date) Then tables to connect customer to person and customer to product: CUSTOMER_PERSON (cp_ID*, customer_ID, person_ID, start_date, end_date) //this is to keep track of your customers names and other details that might be in the person table PRODUCT_CUSTOMER (pc_ID*, customer_ID, product_ID, staff_ID, start_date, end_date) //this is to keep track of which products have been sold to which customers. (I put the staff_id in this in case you need to know who sold it for commision) This is only a very simple solution, but I think it will give you the gist of what needs to be done. If you need more help with, or I didnt answer your question then just repost here and i wil get back to you. ( Full Answer )
The responsibilities of the DBA and the database designers is to prevent conflict of data between different departments and to ensure the security of the data.
By rigorously collecting business requirements, understanding the desired end result as well as the potential expansion / change directions. By considering future plans an architect can design around these possibilities; properly staging the environment for these future plans. At times it may make m…ore sense and be little to no additional work to invoke some of these plans from the beginning. A great example of this would be an application that maintains data for a customer facing portal. lets say that today a company is looking for a simple portal. Plans down the road however would include the ability for a customer to view items that they have looked at in the past. Now for marketing reasons you may want to track this anyway; but assuming that you do not...... With these future plans in mind you may track the historical information from day one. Although the coding is not present to utilize the information it can be of great use later. In this example imagine being able to announce this new capability to your customers; say 6 months after launching the portal... AND being able to inform your customers that they can also view all prior activity (Prior to the service actually being offered or even programmed). this would be made possible because forethought and planning took place that resulted in the retention of the information that would later be needed. ( Full Answer )
Table design in Microsoft Access can be performed by right clicking the table name in navigation view (column that runs down the left hand side of Access that is headed 'All Access Objects' by default) or by clicking the "geometry set" icon on the far left hand side of the ribbon called "View" with …the table actually open. In Design view you can create and rename fields and assign a "Data Type" to represent the type of data being entered into each field such as Text, Date, Number etc. Hope this helps. ( Full Answer )
Such people are either identified as database designers, database engineers, computer scientists or some variant there of. They are not identified as "a database".
All of the information and data that is pulled to make websites isstored in the database. If a database is unwieldy and disorganized,troubleshooting can become impossible.
the transaction made by the customer in our store and the name and preference of or customer are considered as transaction details. so, the database formulated in our store should record those transaction details in to the customer data base.
The first and most important step in designing a database is creating a schema. After creating schema tables are created and data is entered in to the tables.
Determine the purpose of the database - This helps prepare for the remaining steps. . Find and organize the information required - Gather all of the types of information to record in the database, such as product name and order number. . Divide the information into tables - Divide information i…tems into major entities or subjects, such as Products or Orders. Each subject then becomes a table. . Turn information items into columns - Decide what information needs to stored in each table. Each item becomes a field, and is displayed as a column in the table. For example, an Employees table might include fields such as Last Name and Hire Date. . Specify primary keys - Choose each table's primary key. The primary key is a column that is used to uniquely identify each row. An example might be Product ID or Order ID. . Set up the table relationships - Look at each table and decide how the data in one table is related to the data in other tables. Add fields to tables or create new tables to clarify the relationships, as necessary. . Refine the design - Analyze the design for errors. Create tables and add a few records of sample data. Check if results come from the tables as expected. Make adjustments to the design, as needed. . Apply normalization - Apply the data normalization rules to see if tables are structured correctly. Make adjustments to the tables ( Full Answer )
Three key issues we have to consider: â¢ Data Allocation : where are data placed? Data should be stored at site with "optimal" distribution. â¢ Fragmentation : relation may be divided into a number of sub-relations (called fragments) , which are stored in different sites. â¢ Replicati…on : copy of fragment may be maintained at several sites. ( Full Answer )
A fan trap is where one too many relationships 'fan' out from a central entity, so the link between the two entities at the many end becomes unclear. For example, if we had a central entity of Branch (of an organization) and two entities fanning out from it: Staff and Department, we cannot clearly l…ink Staff with Department. ( Full Answer )
A table relationship is where a field in one table is matched with the same field in another table. For example you may have a table that lists your suppliers so 'Supplier Name' is one of the fields, you may then have another table that lists orders made so "Supplier Name" will be a field in that ta…ble also. Therefore you can link the two tables together so that all specific supplier address details are linked to subsequent orders with that supplier. For a relationship to work both linking fields must be of the same data type, therefore you can't link a field that is stated as text with one that is stated as a date. Relationships are commonly known as one-to-one and one-to-many, in a one-to-one relationship the field's contents can only appear once on each side so using the example above one supplier in the suppliers table can only have one order record in the orders table. "One to many" therefore means that one supplier can appear on many orders. Hope this helps. ( Full Answer )
A well designed database will be normalized to the third normal form (3NF). The normal forms that are generally required to have a well designed database are First Normal Form (1NF), Second Normal Form (2NF), and Third Normal Form (3NF). 1NF states that each table has no dependency on top-to-bott…om record ordering, left-to-right column ordering, no duplicate rows, and each column/row intersection contains exactly one value. For example, a column "Customer Name" is a bad idea; instead, consider "First Name" and "Last Name", since those are individual elements of a customer's full name. 2NF adds to 1NF by stating that each non-key column depends on the entire concatenated key (if the key is a composite primary key). For example, the description of an item would not belong in a table that stores items that were ordered; instead, it should be on the item table itself. Finally, 3NF builds upon 2NF (and thus 1NF) by stating that data should not depend on a non-key attribute. For example, the customer's name should not appear in an order invoice table; the correct way to store this data would be in a customer table, with the order invoice table containing a reference to the customer table. There are further forms (see any popular search engine for details), but those are generally considered more academic than practical in nature. In most cases, a database that fully conforms to 3NF will likely satisfy 4NF, 5NF, and 6NF, although there is no specific guarantee of that. ( Full Answer )
preparing the data and using storyboard, although you can use sexual intercourse whilst performing oral which will give a good practical and knowledge of database design concept
Data redundancy is capturing the same data in multiple tables. Ideally, you should only store a particular data point in one table within a database.
A database or systems designer will do it. They could also haveother roles like being an analyst or a database administrator.Whoever is designing a database may work with people in some ofthose other jobs, particularly when it is a very large system. Ifit is a small database, then it is easy to desi…gn and somebody witha bit of knowledge of databases can design and create one. ( Full Answer )
There are actually seven stages for designing a relational database. They are: 1) Formulate an idea for a solution 2) Gather information and clarify needs 3) Develop a list of all useful fields 4) Organize the fields into logical tables 5) Determine and define table relationships 6…) Test, refine and improve 7) Develop queries, forms, and reports For more detail, visit the Related Link. ( Full Answer )
The logic structure is independent of any kind of data model,in the practical application, the general database used by theenvironment has given (such as SQL Server or Oracel or MySQL. Due to the current use of the database basically is relational database, so the first thing to the E-R diagram into… relation model, and then according to the characteristics andlimitations of specific DBMS conversion for the specificsupport of DBMS data model, the final optimization ( Full Answer )
~Normalized Relations, volume estimates, attributedefinitions, response time expectations, data security needs,backup/recovery needs, integrity expectations, DBMS technologyused
When you create a relation (Relationship) within an DBMS you are establishing a relationship of a field in one table to a field another table. Example. We Have a table Customers CustomerID FirstName LastName StatusID The sample fields above are for table Customers Now the StatusID is an INT f…ield and we need to define a relationship between this field and the StatusID column in the Status table StatusID StatusDescription isActive Above are examples of the Status table. To complete our example here we will create a relationship that looks as follows: Customers->StatusID ---> Status->StatusID ( Full Answer )
One can learn more on database design from physical universities and online training organizations specializing in web design. Although nothing teaches more than hands-on experience - actually being out there designing, implementing then publishing a website!
There is only one meaning of the words database design. Data basedesign means the process of creating a very detailed data model ofa database. It is used for a database, of course. Hello, Database design is part of system development, it is the process ofproducing a detailed data model of a databas…e. A database is acollection of information that is organized so that it can easilybe accessed, managed, and updated. Databases are used everywhere inthe world of web development. - conceptual database design - logical database design - physical database design Database designing , website designing & development requiresproper knowledge about that. If anyone wants more information aboutthat can communicate with the Hvantage Technology. I also visitedthis site it has all related information. ( Full Answer )
The data model identifies the objects/entities involved in theapplication and the relationships between them. From that, the ERdiagram is solidified and this forms the basis of the databasedesign.
A good database design requires that the Data is conveniently and efficiently stored. Also the data can be easily stored and maintained.
As the name implies, a database designer develops both the logicaland physical design of the database. For hierarchical databases,they define the parent-child relationships and in relationaltables, the relations between tables. They also often developvalidation rules, constraints and the like.
Database designers are a type of software engineer that specializesin databases. Therein they will investigate the requirements of theend user platform, design the system interface to create, edit andreport on stored data , design user interfaces, design reports,structure and develop an optimized pl…atform. ( Full Answer )
Centralized design is one of the two major methods of designing a networked database, the other being distributed design. In a centralized design, all the database table schema and the data reside in one place where all of the users access it (i.e., central to the users.) Conversely, a distributed d…esign replicates the schema in multiple places and segments the data amongst the multiple sets of tables. Each group of users accesses a particular distributed set of tables with the data relevant to their group. This improves data security and retrieval time for the users at the cost of increased complexity of database maintenance and backup. ( Full Answer )