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What are the Constituents of File? Also elaborates all the possible file operations? A file is organised logically as sequence of record. These records are mapped onto disk blo
What is a database graph? The partial ordering implies that the set D may now be viewed as a directed acyclic graph, known as a database graph.
what is stracture of dabms
Name the various privileges in SQL? A) Delete B) Select C) Insert D) Update
A field-groups statement or an insert statement reverses storage space and transfers values. False.
What are the General Transformation Rules for Relational operations? Ans: The transformation rules transform one relational algebra expression to AN EQUIVALENT ONE 1. E
assignment
What is an ER diagram? Why is it used in Database management system (DBMS)?
Explain the Weak Entity Set An Entity set which does not have sufficient attribute to make a primay key is known as weak entity set. For instance, dependents of an employee in
what is RDBMS? how it works? good example.
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