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What are the drawbacks of File Oriented System in details?
growing phase and shrinking phase are disjoint, why ?
Explain the two constraints, check and foreign key in SQL along with an example for each. Give the syntax. CHECK constraint - CHECK constraint specifies an expression which
Haw does it work one database application
If the deletion violates referential integrity constraint, then three alternatives are available: Default option: - refuse the deletion. It is the job of the DBMS to describ
What is authorization graph? Passing of authorization from single user to another can be shown by an authorization graph.
what is object-identity
what is entity in database system?
Which model is record based logical model? Network Modelis basically known as record based logical model.
Express the following queries in SQL: (a) Write the SQL code that will create ALL the four tables given in the appendix. Your answer should not contain the primary key and
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