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what is entity in database system?
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 are the reasons having variable length records
What is known as a search key? An attribute or set of attributes used to look up records in a file is known as a search key.
Order by clause By using this rows can be sorted It is used in the last portion of select statement By default it gets ascending order DESC: is used
Benefits: It limits data access. It makes difficult queries look easy. It permits data independence. It presents dissimilar views of the similar data.
In which form of relational database developer refers to a record? In a tuple form of relational database developer refers to a record.
Your OS has a set of queues, each of which is protected by a lock. To enqueue or dequeue an item, a thread must hold the lock associated to the queue. You need to implement an a
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