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Supper Key- s a set of one or more attributes that taken collectively and allow us to identify entities with in entity set.
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∙ 11y ago
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What ensures the value of the foreign key matches another tables primary key?
It is the DBMS that ensures the value of the foreign key matches another table's primary key when referential integrity constraints are enabled within the DBMS
Define attribute in dbms?
In DBMS a table contains one or more columns there columns are the attribute in DBMS FOR EXAMPLE---say you have a table named "employee information"which have the following columns ID,NAME,ADDRESS THEN id ,name address are the attributes of employee..................
Dbms and rdbms?
DBMS and RDBMS both are used for storing data. DBMS is the database management system that refers to the collection of interrelated data. RDBMS define relation between the tables in the database
What are dbms languages?
DBMS is Database management system . The DBMS language are those that are used to store and maintain the data in the database. Example PL/SQL.
Define DBMS What is its primary goal?
collection of interrelated data & set of program & access those programITS GOALprimary goal of dbms is store & retrieve the database information in convenient & efficient way
Define the two principle integrity rules for the relational modelDisscuss why it is desirable to enforce these rules also explain how DBMS enforces these integrity rules?
Define the two principle integrity rules for the relational modelDisscuss why it is desirable to enforce these rules also explain how DBMS enforces these integrity rules?
What is secondary key?
define secondary key
What is secondary indexes in dbms?
secondary index is a key which is created other than primary key, to speed up processing.
Could DBMS being the key for the billionaires of the future?
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Example of a DBMS used in the web-based application?
web browsers
Definition of key in dbms?
It is a pool of data through which data are enter into into the table for data management.
Why relation have key in DBMS?
A software system that facilitates the creation and maintenance and use of an electronic database
