Database Programming

Parent Category: Computer Programming
Databases are collections of tables that maintain and display information, often collaboratively; this information can be used for interaction with an application or gaining general knowledge. Questions about database engines and modifying or using them belong in this category.

Subcategories

The data type for 0.38 is double.
Chapter 3 : Entity - Relationship Modelling The aims of this chapter are: . To explain the need for entity-relationship modelling . To explain the terms entity-relationship model,entity-relationship diagram . To define the terms entity type, entity, attribute, attributevalue, primary key,...
Layer 6 - Presentation Layer
A structuredcomplex object database differs from an unstructured complex objectdatabase in that the object's structure is defined by repeatedapplication of the type constructors provided by the OODBMS. Hence,the object structure is defined and known to the OODBMS.
Important ways to access relational database: 1. Accessing the relational database using JDBC with Spring. 2. LIBNAME Statement for relational database. 3. Using HBase
Data is stored as objects and can be interpreted only using themethods specified by its class.
can u please elaborate the question for details on database visit" tutorialsera "
A common field is a field of data that is shared among all forms ina database. Without them, it would be difficult and/ortime-consuming to create other forms.
Since the conceptual design sets the direction for the managementinformation system (MIS). It is vital that managers participateseriously and heavily at this stage. Conceptual design is sometimescalled feasibility design, gross design or high level design. The conceptual design phase takes as...
Maybe mean the data can change?
Database is a collection of facts, figures and statistics relatedto an object. Data can be processed to create usefulinformation. A knowledge base is a special kind of database for knowledgemanagement. It provides the means for the computerized collection,organization, and retrieval of knowledge
IN COMPUTER SCIENCE, A SPACE-TIME OR TIME-MEMORY TRADEOFF IS A SITUATION WHERE THE MEMORY USE CAN BE REDUCED AT THE COST OF SLOWER PROGRAM EXECUTION (OR, VICE VERSA, THE COMPUTATION TIME CAN BE REDUCED AT THE COST OF INCREASED MEMORY USE). AS THE RELATIVE COSTS OF CPU CYCLES, RAM SPACE, AND HARD...
Oracle sells many functional modules which use the Oracle RDBMS asa back-end, notably Oracle Financials, Oracle HRMS, Oracle SCM,Oracle Projects, Oracle CRM, Oracle Procurement.
Yes, You can show the railway reservation mini project using theoracle and vb 6.0.
There isn't just one main server for the entire internet; the internet is a community of networks and servers located around the world. Some of the servers have specific tasks, such as maintaining the DNS system. The Internet is a distributed network system. As a result, there is no such thing as...
Microsoft Access is designed to scale to support more data andusers by linking to multiple Access databases or using a back-enddatabase like Microsoft SQL Server. With the latter design, theamount of data and users can scale to enterprise-level solutionsfor people.
A university has a large number of courses in catalog.Attributes of COURSE include Course_Number(identifier),Course_Name and Units.Each course may have one or more course as prerequisties or may have no prerequisties.Similarly,a particular course may be a prerequisties for any number of courses or...
PHP Vs. ASP.NET- What Serves Website Application DevelopmentBetter?
1. Relational algebra operationsmanipulate some relations and provide some expression in the formof queries where as relational calculus are formed queries on thebasis of pairs of expressions. 2. RA have operator like join,union, intersection, division, difference, projection, selectionetc. where...
Answer. You batch your jobs in order of shipping dates to eliminate back logs of work not done. Work that is done is put in another place to await shipping. The old batch system worked very well when there was a steady flow of work not caught up in bottle necks where everything stopped moving.. For...
Information systems design is based on the idea that technology should be used to promote and support the business model. What this means is that an information systems expert should also be knowledgeable about the processes within a business which cause it to operate.. The primary purpose of any...
The necessity of having information systems varies depending on thesector a system covers, but systems generally support operationsand decisions made within organizations as well as helping withdata storage and facilitating management. Information systems areused by a variety of organizations in...
A relation may be in 2NF if 1. it is in 1NF & 2. Every non prime attribute functional dependent on primaryattribute
You have to shut down for inventory and count everything.
waiting time =turn around time-burst time
They are the same thing. One just has a dash in the name.
The database catalog of a database instance consists ofmetadata in which definitions of database objects such as basetables, views (virtual tables), synonym, value ranges, indexes,users, and user groups are stored. The SQL standard specifies a uniform means to access the catalog,called the...
A const data type is one which cannot be changed once initialized. A volatile data type is one which should never have its value locally cached. Note: Neither of them is data-type, they are modifiers.
according to definitions on secdatabase.com, here is difference: Form S-8 is the Registration Statement under the Securities Exchange Act of 1933. It is used by a publically traded company to register securities that will be offered to its employees via benefit or incentive plans. Form 8-K ...
Transaction processing systems date through the early 1970`s
Imports system.data . Imports system.data.oledb . Module Module1 . Sub Main() . Dim con As New OleDbconnection . Dim cmd As New OleDbcommand . Dim dr As OleDbDataReader . con = New OleDbConnection("provider=microsoft.jet.oledb.4;data source=D:/student") . con.Open() . Console.WriteLine("connection...
A lot of companies in world that use transaction processing systemlike Emvantage payments private limited, CCAvenue, PayPal, Atom ,Citrus, Ebs, transecute and many more.
For a medical shop, The patient is directly connected with the shopas well as a doctor. So make three entities: Patient, doctor andshop. They have their own properties.
In SQL Server 2005/2008 : Sql Server Configuration Manager -> Protocols -> TCP/IP -> IP Addresses -> TCP Port. In SQL Server 2000 : Client Network Utility -> Select 'TCP/IP' from the enable protocols list and press 'Properties' button. The default port is 1433.
There are a variety of types of databases. These include onlinedatabases, graph databases, public domain databases, and timeseries databases.
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...
The method of logarithms was first publicly propounded in 1614, in a book entitled Mirifici Logarithmorum Canonis Descriptio, by John Napier, Baron of Merchiston, in Scotland (Joost Bürgi independently discovered logarithms; however, he did not publish his discovery until four years after Napier....
Some of the operations performed in DDL in sql are creation of table,alteration of table,truncate a table, drop a table
In order for data to not be effected in another file with the samedata there needs to be different file names. If the file has thesame name and is linked to the other file, data can be changed inboth files.
Secondary keys are the database keys that hold the physicallocation of a portion of a record in a database or file. Theyprovide a secondary way of accessing the information.
A data structure is a collection of more than one elementary item, in some kind of aggregate organization. An array is a type of structure where more than one item of the same type are arranged serially in memory, and accessed using an index. The item can either be an elementary type or it itself...
Data Base Properties "Owner" of the file. The owner always has the ability to modify the permissions of a file or folder.
Open the drawer containing the folder. Place the paper in the appropriate folder and then close the draw.
SQl Server is a server based database. Access is used as local database.Access is used for small desktop size databases used by less then 5 users at the same time. It has a front end gui system to design applications quickly. SQL Server is a more robust system and is able to handle large amounts of...
Linear Queue C Program using structure #include #include #include #define MAX 50 typedef enum{true,false} bool; typedef struct{ int front,rear; int elements[MAX]; }queue; bool isfull(queue *); bool isempty(queue *); void create(queue *); void enqueue(queue *,int); void dequeue(queue *); void peek...
type you thing you want to search into quires
The round robin scheduling algorithm works by placing all processesin a circular queue and allotting each process a single time sliceuntil all processes are completed. If process A required 2 timeslices, process B required 1 time slice, and process C required 3time slices the queue would be as...
MyISAM is the default table engine in the MySQL database.
Advantage is More secure and Normalization(reducing Redundancy,repitation,concurrency),avoiding problems while processing 2 things at a time.(while these are not possible in file proccessing systems) Disadvantage is it requires more knowledge to implement.
RDBMS stands for Relational Database Management System. Some of itsdisadvantages are poor support for storage of complex objects, lackof efficiency in integral support and slow extraction of data.
dbms- database management systems............. it is a collection of interrelated data and the set of programs to access those datas........ it is used to meet the disadvantages of the file systems........ there are many disadvantages of filesystems........ lik,, data redundancy and data in...
It is used as the unique identifier for each record and is used to sort the data
The decision support system in MIS helps the management level staffto make comparisons and alter certain processes for smooth runningof the business. The system acts as a guide.
You do not name the system. Need a noun here. oh and that is not an actual question unless it is rhetorical or you are expressing disbelief by repeating what you are supposed to do, i.e. if a teacher tells you to do something, (Discuss the advantages and disadvantages of this system), and you ask...
The different types of relationships in a database are; one-to-many relationships, many-to-many relationships, one-to-one relationships. One to one is the most commonly used, a row in table A can have a lot of matching rows in table B but table B can only have one matching row in table A. Many to...
COBOL stands for CO mmon B usiness- O riented L anguage. Originally specified in 1959, COBOL is one of the earliest computer programming languages. The first compilers for COBOL were implemented in 1960. On December 6 and 7, 1960 COBOL ran on both an RCA and a Univac computer in the first example...
Naïve (or Parametric) end-users are the largest section of end-user population , they Use previously implemented and tested programs (called "canned transactions") to access/update the database . . Stand-alone end-users Mostly maintain personal databases using ready-to-use packaged...
A hospital management system is an information system that managesthe aspects of a hospital. This may include the administrative,financial, and medical processing.
Database contains data which might be confidential. Data in any organization is confidential. To prevent confidentiality of the firm security need to be implemented. So that information can not be stolen.
database management is the organized data , today typically in digital form......
According to wikipedia: " sagan has been defined as a unit of measurement equal to at least four billion, since the smallest number that may be described as billions and billions must be two billion plus two billion". According to google calculator: "four billion bytes = 3.7252903 gigabytes". ...
* DSS is the system for helping managers, administrators, high authority to take decision in any business organization. * KLS is a part of DSS (There are two parts of DSS as- Knowledge Lean System & Angie system)
ER Diagram - entity relationship diagram. Identify the entities in a computer shop. there will be computers , and various peripherals and components workers customers (.. what else ?)
Database security refers to the collective measures used toprotect and secure a database or database management software fromillegitimate use and malicious threats and attacks. It is a broad term that includes a multitude of processes, toolsand methodologies that ensure security within a...
Payment gateways are used for transaction processing system.Examples are PayU, Emvantage, CCAvenue, PayPal, Ebs etc.
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...
Database is a collection of interrelated data. Database management system is collection of data and a set of programs to access and modify that data. There is a technique called normalization used to make good database design. Normalization helps to reduce redundancy from the data. There are...
elementry data organisation is a way to put the position of special element
A junction table is added between the two tables involved in the relationship. The primary key from each table is added to the junction table and they are made a joint primary key in that table. Then two one-to-many relationships are set up between the junction table and each of the two other tables...
In order to access a base class member the base class member must be declared protected or public. Private data is only accessible to members of the same class and to friends of the class. I'm not entirely sure what you mean by accessing from a database. A derived class does not require a database...
ADLER THERAPEUTIC PROCESS PHASE 1: Establishing the Relationship PHASE 2: Exploring the Individual's Dynamic PHASE 3: Encouraging Self-Understanding and Insight PHASE 4: Helping with Reorientation
To copy a structure you simply allocate the amount of memoryrequired to store the structure. For simple data structures likearrays that's all you need to do (leaving the memory uninitialisedor set to some default value such as zero). But for complexstructures like lists, trees and graphs, you need...
A field is designated as a unit of data. It can be thought of as being like the cell in a spreadsheet. For example, a database address record might have a street address field, a city field, a state field and a zip code field. It would also need a primary key field. All these fields taken together...