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Grant: It is used to give database access permission to users. It is of two types
(1) system level permission
(2) Object level permission.
Define Join and Outer Join and differentiate between them. Ans: Join - It generates all the combinations of tuples from two relations which satisfy a join condition. Oute
Give an example of operations from the State Actions and Activities. For instance, in bank the activity verify account code and verify password
What is a Transaction? A transaction is an event which happens on the database. Generally a transaction reads a value from the database or writes a value to the database. If y
Which operator is Cartesian product in relational algebra? Cartesian product in relational algebra is a binary operator. (It requires two operands. e.g., P X Q)
What is Cross Product? Simply Cross product is Binary Operator
how to data store?
how can apply joins on table
Write a Query that uses the UNION Operator 1. Use the Software Experts database to: a. Display the first and the last name of all consultants who worked on any projects f
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
Explain Instance and schemas? Instances and schemas: Databases changes over time as the information is deleted and inserted. The collection of information stored in database
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