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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.
About Attribute inheritance
Explain Domain calculus Domain calculus is one of the types of the relational calculus. The formal specification of the domain calculus was planned after the development of the
Sub query in the UPDATE command : Example : //Double the commission for employees, who have got at least 2 increments. UPDATE EMP SET COMM = COMM * 2 WHERE
Consider the following relations: BRANCH( bno, street, area, city, pcode, Tel_no, Fax_no) STAFF( Sno, Fname, Lname, address, position , salary, bno) Express the subsequent qu
What are the reasons for having variable length records? What are the various ways to store variable length records? Variable-length records arise in a database in various wa
Question: AirwaysCentre, an international airline booking company currently uses a relational database system for their operations, which includes the following relations: P
#explain five disadvantages of a dbms..
What are the properties in a relation ? In a relation Ordering of rows is immaterial and No two rows are identical.
Designing the fields in the data base The following are the considerations one has to remain in mind while designing the fields in the data base. Coding, compression, en
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