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What is equi join?
Equi Join - It generates all the combinations of tuples from two relations which satisfy a join condition along with only equality comparison (=).
what is 3nf
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
What is called as an N-way merge? The merge operation is a generalization of the two-way merge used by the standard in-memory sort-merge algorithm. It merges N runs, so it is k
Describe log based recovery The most usably structure for recording data base modification is the LOG the log is a sequence of log records recording all the update activities i
Example: Consider the following relations: ROLLNO NAME ADDRESS COURSE_ID 100 Ka
Write the C++ program having class name studentinfo, that is used to store the VU student information: This class should store your VUID, campus id, name and father name in the fol
what is attribute is attribute inheritance in dbms?
A basic model of Database Access Control Models of database access control have grown out of previous work on protection in operating systems. Let us talk about one simple mode
What is RDBMS terminology for a row? A tuple is a RDBMS terminology for a row
A student entity type has the following attributes,name..
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