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how many types of data model in DBMS? explain data abstraction with its different level
Describe an data dictionary? A data dictionary is a data structure which keeps meta data about the structure of the database ie. the schema of the database.
A View may be defined of as a virtual table, that is, a table that does not really exist in its own right but is instead inferred from one or more underlying base data table. T
Physical Records These are the records that are stored in the secondary storage devices. For the database relation, physical records are the group of fields kept in adjacent me
Define Fifth Normal form is concerned with Ans : Fifth Normal form is concerned with Join dependency.
what is correlation in nested query
what is Mapping Constraints? with examples
What are the DBMS languages? Explain. Ans: a) Data Definition Languages (DDL): It is employed to specify database schema for example CREATE DROP statements etc. b) Dat
what is attribute is attribute inheritance in dbms?
Database Administrator One of the main perpose for having the database management system is to have control of both data or programs accessing that data. The person having li
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