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Q. Explain the terms key constraints participation constraints and mapping caradinalities in ER model. Participation Constraints : The participation of an entity set E i
Differance between DDL and SDL? DDL and SDL - The data definition language (DDL) is used through DBA and database designers to describe internal schema, conceptual schema, and
In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
word limit no mentioned
Difference between Operating System and Database Security Security within the operating system can be executed at various levels ranging from passwords for access to system, t
WHAT IS SQL
Physical Database Design Issues The database design includes the process of logical design with the use of E-R diagram, normalisation, etc., followed by the physical design.
explain thee diffrent types of data models
What is storage manager? A storage manager is a program module that gives the interface between the Low level data kept in a database and the application programs
Data Fragmentation "Fragmentation includes decomposing the data in relation to non-overlapping component relations". Why do we require fragmenting a relation?
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