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What is an Operand?
The data on which the operation is to be performed is known as an Operand
Define physical and logical data independence. How does this architecture help in achieving these? Data independence entails that change in one view must not need a change in t
In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
What is meant by the degree of relationship set? The degree of relationship type is the number of participating entity types.
The data of a view is not physically stored, but derived from one or more tables. True the data of a view is not physically stored
What is data integrity? Ans: It is the data consisted of in database that is accurate and consistent. (Data integrity means that the data should be valid as per to the give
What is catalog in DBMS? Catalog - A relational DBMS maintains information about every table and index in which it contains. A catalog is a collection of special tables that st
What is known as clustering file organization? In the clustering file organization, records of several dissimilar relations are stored in the similar file.
What is a value? A data value is used for identity. This form of identity is used in relational systems.eg: The primary key value of a tuple recognize the tuple.
1. Create a subroutine that does the remote blast on the file protein.fa. 2. Pass that returned files from the blast to another subroutine that parses the output and sends it to
Consider the following relations: S (S#, SNAME, STATUS, CITY) SP (S#, P#, QTY) P (P#, PNAME, COLOR, WEIGHT, CITY) Give an expression within SQL for each of queries b
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