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Define- relational algebra.
The relational algebra is a procedural query language. It having of a set of operations that take one or two relation as input and make a new relation as output.
List the set operations of SQL? 1) Union 2) Intersect operation 3) The except operation
Give an example of operations from the State Actions and Activities. For instance, in bank the activity verify account code and verify password
explain in detail about crash recovery
10A.53 Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department. 10A.54 Code an Oracle Database trigger to allow the delet
What is the max. no. Of structures that can be included in a table or structure. Nine.
example of embedded SQL query
What do you mean by DBMS? What is its need and what are its goals. Explain? OR Explain Data Base Management System? Sol. Database management system is a
Differentiate between Key and superkey? Key and superkey - A key a single attribute or a combination of two or more attributes of an entity set in which is used to identify o
Explain degree of relation? Degree of a Relation - The degree or arity of a relation is the number of attributes n of its relation schema.
Define page. The database is partitioned into some number of fixed-length blocks, which are referred to as pages.
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