What is DBMS?
Data Base Management System
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A data is known as the rowfact which is stored in computers memory and used by the user as the output
DBMS is an application that is used to manage & maintain Databases. DBMS provides scalability & modifications in Databases & makes them accessible via SQL queries.
dBm is decibel power unit referenced to 1 milliwatt. Look at the related links for conversion: voltage to dBm, dBu, and dBV.
If in the database have more then one records of same type then it is called redundancy.
Hashing is the technique of to retrieving the datas in thedatabase. for example,we created one index for one main table,sohow we can retrieve the index from that main table? ans- to usingone function we can retrieve the data,that function is called hashfunction. hash function format is h(search key)…=pointer or bucket identifier. (MORE)
DataBase Management System (DBMS) is a software package that allows data to be effectively stored, retrieved and manipulated and the data stored in a DBMS packege can be accessed by multiple users and by multiple application programs like (SQL Server, Oracle, Ms-Access) ..
1.DBMS (Data base management system ) is a process of managing data for efficient retrieval and storage of data. 2.The data base which is used by relations( tables) to acquire information retrieval are known as RDBMS. example- sql . Another answer DBMS is the Database Engine itself like …MySql Server RDBMS is a DBMS that is based on the relational model. Almost all modern DBMS's are RDBMS's. Older DBMS's were based on different models (network, hierarchical, etc.) (MORE)
Benefits of DBMS (Database Management Systems) are followings. â¢ Flexibility: Because programs and data are independent, programs do not have to be modified when types of unrelated data are added to or deleted from the database, or when physical storage changes. â¢ Fast response to infor…mation requests: Because data are integrated into a single database, complex requests can be handled much more rapidly than if the data were located in separate, non-integrated files. In many businesses, faster response means better customer service. â¢ Multiple access: Database software allows data to be accessed in a variety of ways (such as through various key fields) and often, by using several programming languages. â¢ Lower user training costs: Users often find it easier to learn such systems and training costs may be reduced. Also, the total time taken to process requests may be shorter, which would increase user productivity. â¢ Less storage: Theoretically, all occurrences of data items need be stored only once, thereby eliminating the storage of redundant data. System developers and database designers often use data normalization to minimize data redundancy (MORE)
it is the power ratio in decibels No, it isn't. dB on its own is a ratio. But when dB has a suffix, the figure is an absolute measurement, not a ratio. For instance, dBm is a measurement of power compared to 1mW. 0dBm means zero difference between 1mW and the measured figure. In other word…s the measured figure is also 1mW. 3dBm is 3dB greater than 1mW. -3dB is 3dB less than 1mW. etc. Another suffix is W. 0dBW being 1 watt. There are many more suffixes, some of which are used in only a few specialised cases. (MORE)
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 cons…istency, difficulty to access data,integrity problems, atomicity problems.............. dbms is quite complicated but better than file systems (MORE)
\nData Definition Facilities - CREATE and DROP. \nData Manipulation Facilities - SELECT, INSERT, UPDATE and DELETE.\nHelp Facilities - MS Access provides helpful wizards to allow 'novice' users to do a task or even 'expert' users to do it easier.\nReporting Facilities - Creating professional looking… reports from SELECT statements, another good example of this is MS Access.\nData Control Facilities - Permissions, GRANT. Views, CREATE VIEW, etc.\nMulti-user Functionality - Allowing more than one user to access the database simultaneously. Including concurrency controls such as locking part of the database that is being updated.\nDistributed Databases - Distribute the database over several sites.\nCASE Tools - Computer-aided Software Engineering is the automation of the development of software systems. An example of this are the easy tools provided in MS Access and Oracle to create forms for a database.\n. \nI'm sure people can add more, but these are what I see as the main functions. (MORE)
What is the purpose of dbms? . DBMS is a software that organises the creation, storage and maintenance of Databases for end users.
NA_. what are highlights of advanced DBMS. what are highlights of advanced DBMS. what are highlights of advanced DBMS
A join is a temporary relationship that you can create between two tables in a database query that do not already have an established relationship or common field with the same fieldname or data type. Database tables that are joined in a query are related in that query only, and nowhere else. The ty…pe of join that you use indicates which records the query will select or perform the chosen actions on. (MORE)
Can't afford the overhead . Cost of the DBMS . Training Time . Processing Time . When the application is simple . Dealing with a single table. .
A database management system ( DBMS ) is a software package with computer programs that controls the creation, maintenance, and use of a database. It allows organizations to conveniently develop databases for various applications. A database is an integrated collection of data records, files, and …other objects. A DBMS allows different user application programs to concurrently access the same database. DBMSs may use a variety of database models, such as the relational model or object model, to conveniently describe and support applications. It typically supports query languages, which are in fact high-level programming languages, dedicated database languages that considerably simplify writing database application programs. Database languages also simplify the database organization as well as retrieving and presenting information from it. A DBMS provides facilities for controlling data access, enforcing data integrity, managing concurrency control, and recovering the database after failures and restoring it from backup files, as well as maintaining database security. (MORE)
A trigger is a special kind of stored procedures that automaticallyexecutes when an event occurs in the database server. Insert,update and delete are called as events.
Generalization defines a is-a-kind of relationship in which one class shares its structure and/or behavior with one or more other classes. The concept of generalization in UML is similar to inheritance in Java. It maps directly to the extends keyword. It is shown by a straight line originating from …the subclass with a hollow arrowhead pointing at the nearest superclass. (MORE)
Minimal Data Redundancy . Consistency of Data . Integration of Data . Sharing of Data . Data independence . Ease of Application Development
o Interest Rate Risk: One way to measure interest rate risk is to measure the volatility of interest rates. The easiest way to do this (though not necessarily the most correct) is to look at the historic volatility of interest rates. A more complex way to do this is to use mathemtical models to fore…cast interest rate scenarios. o Credit Risk: Credit risk is evaluated by credit ratings agencies, the most common being Moody's, Fitch, and Standard and Poors. These agencies assign credit rates to corporations and bonds, helping the investor and lenders understand the implicit risk of the borrower/issuer. o Liquidity Risk: Typically the bid-offer spread (the difference between where you buy and sell a product) is a good indication of liquidity risk. For example, if you can buy a stock at $100 and sell it at $99.95, the bid-offer spread is $0.05, and getting out of the trade is considered relatively easy. However, if you could buy a bond at $100 but sell it at $80, the bid-offer spread is $20, and the bond would be considered illiquid. o Event/Geopolitical Risk: This is a tough one to measure. Increasing global tension is generally reflected in price volatility or a runup in certain types of prices (gold, oil, US Govt bonds), but no one can predict when/where major risk-impacting events will happen. (MORE)
Data base system applications: 1.Universities: For student information, course details, and grades. 2.Airlines: For reservations and schedule information. 3.Credit card transactions: For purchase on credit cards and generations of monthly statements. 4.Human resources: For information about employee…s, salaries, payroll taxes, benefits and for generations of paychecks. 5.Banking: For customer information, accounts, and banking transactions. (MORE)
Row = Record = Tuple Column = Field = Attribute. These words are used interchangebly. Akshay Sahu (MCTS SQL Server 2005)
Anomalies are problems that arise in the data due to a flawin the database design.
speed . client server architecture support . easy maintenance and Database Management System DBMS is used to store information in the form of tables columns and rows, interconnected by keys and accessible throughout an interface. Examples: SQL, MYSQL, ORACLE, etc ... Read more: http://wiki.…answers.com/Q/What_is_need_of_dbms#ixzz2MowXopjw (MORE)
Data Security . Data Integrity . Interactive Query . Interactive Data Entry and Updating . Data Independence
when a relationship is optional then the value of the modality is zero. when mandatory then the modality is one.
DBMS stands for D ata B ase M anagement S ystem. So it's role is basically to manage the database. More specifically this software controls the storage, organization, retrieval, integrity and security of the data in the database.
When you create a table or add a field to a table in thegeodatabase, fields are created as a specific data type. Data typesare classifications that identify possible values for andoperations that can be done on the data, as well as the way thedata in that field is stored in the database. When you im…port dataof one type into a field of another data type, you need tounderstand what the equivalent data types are between ArcSDE andyour database management system (DBMS) because it can impact datacontent. Also, when creating new datasets in ArcGIS, it is helpfulto know the equivalent data types between ArcGIS and your DBMS. Forexample, if you add a floating point (float) column to an existingfeature class, that equates to a numeric data type column in a SQLServer database. Well, a DBMS is a database management system. In other words, apiece of software (an engine if you like) that manipulates data ina structured fashion. (MORE)
schedule is an interleaving of action from a set of transactions where the action of any transaction is in the original order.
Basic Characteristics of DBMS â¢ Represents complex relationship between data â¢ Controls data redundancy. â¢ Enforces user defined rules. â¢ Ensures data sharing. â¢ It has automatic and intelligent backup and recovery procedures. â¢ It has central dictionary to store info…rmation. â¢ Pertaining to data and its manipulation. â¢ It has different interfaces via which user can manipulate the data. â¢ Enforces data access authorization. (MORE)
DBMS or database management systems are used to standardize theupdating, maintenance and extraction of data. They make certaintasks routine which allows for simpler programs to access the data.
In a database management system, a field refers to the smallestunit of information about particular data. It helps in arrangingand accessing information.
Every transaction is recorded in a database log. In case of failurethe entire log is processed. This will take too much time.To reducetime overhead a concept called checkpoint is introduced.Checkpointsis also known as save points .Only all transactions after thelast failure are recorded in the log.…The rest are transfered to astable storage.This way in case of another failure, processing willbe done only from the previous 'chekpoint' (MORE)
Database Management System DBMS is used to store information in the form of tables columns and rows, interconnected by keys and accessible throughout an interface. Examples: SQL, MYSQL, ORACLE, etc ...
1. To manage record of information in a desired manner. 2. Provide easy access to user. 3. minimum redundancy. 4. provide easy way to upgrade data.
dbms is data base management system .It is combination of the data base & the the softwares to access the data from the database. eg:Poracle 91,dbase; for more reply to firstname.lastname@example.org
Atomicity means atomic data can't have multiple value of the samedata type in that column.
Simply stated, that is an acronym for an advanced 'Database Management System', which is a software package that would facilitate the development of various applicable databases. See the related link listed below for more information:
Not really, but now a days, every software that deals with data storage, has some feature of DBMS.
DBMS Benefits 1.Improved strategic use of corporate data 2.Reduced complexity of the organization's information systems environment 3.Reduced data redundancy and inconsistency 4.Enhanced data integrity application-data independence 5.Improved security 6.Reduced application development an…d maintenance cost 7.Improved Flexibility of information systems 8.Increased access and availability of data and information 9.Logical and physical data independence (MORE)
its really good course because the d.b.m.s is the need of today time as in many companies...........many productions managements.
DBMS stands for data base management system. DBMS is a collectionof programs that enables users to create and maintain a database.The DBMS is a general purpose software system used to facilitatethe process of defining, constructing and manipulating data basesfor various applications. features of DBM…S: 1.Data independence 2.Efficient data access 3.Data integrity & security 4.Data administration 5.Reduced application development time (MORE)
A DBMS snapshot in Oracle can also be referred to as a materialized view. Basically a snapshot is a refreshable view that can be refreshed on command or commit.
class in dbms is nothing but a collection of attributes.... class in java is defined as collection of objects....:D
Entitie are the principal data object about which information is to be collected. Entities are usually reognizable concepts,either concrete or abstract, such as: person,university,employees etc.
In DBMS the data is stored in the form of table . Each row in DBMS is known as tuple.
One major problem in databases is concurrency . Concurrency problems arise when multiple processes try to update or insert data into a database table at the same time. Such concurrent updates can cause data to become corrupt. Locking is a strategy that is used to prevent such concurrent updates …to data. When a database system modifies data in one of its tables it first acquires a lock . When a table is locked, only the process the acquired the lock is allowed to modify the data in the table. Other processes will have to wait until the lock is released before they can make their changes. Now, this is a simple representation of how locking works. In reality databases can use different locking strategies. Depending on the database system, locks can be acquired on entire tables (table-level locking) or on individual rows (row-level locking). (MORE)
DBMS is database management system and it stores data that are related. DBMS maintains data security and integrity as well.
DBMS stands for Database management system in short . As the name suggest it stores and manages the data which is related to each other.
Connectivity in database management system is done using is done by making a connection object and using JDBC driver API. For database connectivity ognl.jar should be included in the project.