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What is Structured Query Langauge (SQL)?
SQL is a powerful set-oriented language which was formed by IBM research for the databases that adhere to the relational model. It having of a short list of powerful, yet highly flexible, commands that can be used to influence information collected in tables. By SQL, we can manipulate and control sets of records at a time.
What are the comparison operator in SQL? Comparison operator in SQL are =, LIKE and BETWEEN
Define Shared locks? Ans: Shared lock: Throughout concurrent execution of transactions, earlier than a transaction can access a data item, it has to obtain a lock on it. Now he
What is average response time? The average response time is that the average time for a transaction to be done after it has been submitted.
It can be easily defined as: The database must not have any unmatched foreign key values. The term "unmatched foreign key value" means a foreign key value for which there doe
write program
What is foreign key? A relation schema r1 derived from an ER schema may contain among its attributes the primary key of another relation schema r2.this attribute is known as a
object oriented database
Table Handling In RDBMS more than one table can be tackled at a time by using join operation. Join operation is a relational operation that causes 2 tables with a common domai
The Maximum no of key fields that can be used in a header is?? 50
The technique of converting the state diagram to code a) Identify all major control paths. Start from initial state; choose a path across the diagram that corresponds to normal
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