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What is called a query evaluation plan?
A sequence of primitive operations that can be used to assess a query is a query evaluation plan or a query implementation plan.
Define entity integrity and referential integrity. How does SQL allow specification of these? Ans: Entity Integrity Rule- If the attribute A of relation R is a prime attribut
Enumerate or state the steps in creating a relevant database of a shop.
what is bogus empowerment. And what is genuine empowerment
explain the mapping constraints
What are the three types of data sources used with ODBC? An ODBC file data source is a file that can be shared between database users. An ODBC system data source is one that is
Failures and Recovery In practice various things might occur to prevent a transaction from completing. Recovery methods are used to bring database, which does not satisfy consi
notes about update opreation
Problem: (a) Briefly explain the ‘Hierarchical Database Model' using appropriate diagram. (b) List and briefly describe five potential benefits of the database approach comp
Describe Database state in details? Database state: The actual data within the database at a particular moment in time is known as a database state.
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