In a query tree, the input relations of query are classified as _____________
In a query tree, the input relations of query are classified as _____________
In the EQUIJOIN condition, the operation which is used to avoid superfluous attribute is classified as __________________
In the EQUIJOIN condition, the operation which is used to avoid superfluous attribute is classified as __________________
The branch of calculus which is based on mathematical logic is classified as____________
The branch of calculus which is based on mathematical logic is classified as____________
The JOIN operation which uses any of the comparison operators is classified as_____________
The JOIN operation which uses any of the comparison operators is classified as_____________
If in the JOIN operation, the conditions of JOIN operation are not satisfied then the results of the operation is __________________
If in the JOIN operation, the conditions of JOIN operation are not satisfied then the results of the operation is __________________
The selection condition of SELECT operator is considered as______________
The selection condition of SELECT operator is considered as______________
The SELECT operation is performed on _______________
The SELECT operation is performed on _______________
With the help of selection condition, the fraction of selected tuples is classified as ___________
With the help of selection condition, the fraction of selected tuples is classified as ___________
In unary relational operations, the SELECT operation is partition of relation usually classified as_____________
In unary relational operations, the SELECT operation is partition of relation usually classified as_____________
The type of JOIN operation through which one can keep all tuples in relations without considering corresponding tuples in any other relation is classified as ______________
The type of JOIN operation through which one can keep all tuples in relations without considering corresponding tuples in any other relation is classified as ______________
In the notation for query graphs, the double ovals or circles are used to represent ______________
In the notation for query graphs, the double ovals or circles are used to represent ______________
The kind of operation which is used to extend the traditional projection operation by including projection attributes in projection list is called ________________
The kind of operation which is used to extend the traditional projection operation by including projection attributes in projection list is called ________________
The most convenient operation which is used for the queries having uni- versal quantification is classified as _______________
The most convenient operation which is used for the queries having uni- versal quantification is classified as _______________
The expression of generalized projection can be written as _____________
The expression of generalized projection can be written as _____________
In unary relational operations, the symbol π is used to represent the operation called_____________
In unary relational operations, the symbol π is used to represent the operation called_____________
The expression which specifies the procedure to retrieve rather than retrieval content is classified as _________________
The expression which specifies the procedure to retrieve rather than retrieval content is classified as _________________
The relational calculus is classified as _______________
The relational calculus is classified as _______________
In relational operations, the SELECT operation is written as_______________
In relational operations, the SELECT operation is written as_______________
The process in which tuple is created by having combined attributes from two relations is classified as __________
The process in which tuple is created by having combined attributes from two relations is classified as __________
Consider two tuples B and C, the operation whose result includes tuples that are included in both relations or either in B or C is classified as _______________
Consider two tuples B and C, the operation whose result includes tuples that are included in both relations or either in B or C is classified as _______________