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What is called as recursive partitioning?
The system repeats the splitting of the input unless each partition of the build input fits in the memory. Such partitioning is known as recursive partitioning.
Explain the EXISTS and UNIQUE functions of SQL. Give an example for each? EXISTS: The EXISTS function takes one parameter that is a SQL statement. If any records exist which
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.
Describe the shadow paging technique.
In an E-R diagram an entity set is represent by? In an E-R digram entity set is represted by rectangle.
What is Nested Queries explain in details? Nested Queries - A SELECT query could have subquery(s) in it. While a SELECT query having another SELECT query in it, is known as n
Explain the paths in the association network We can analyze use of paths in the association network as given below: Calculate each operation Find associations whic
The result of the UNION operation between R1 and R2 is a relation that includes? The result of the operation between R1 and R2 includes all the tuples of R1 and R2 which have c
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
Benefits and Limitations od Data Models?
How to draw an ER diagram to a finance companz
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