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Define an operator that a Relational Algebra does not have
Ans: Relational Algebra does not have Aggregation operators.
10A.53 Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department. 10A.54 Code an Oracle Database trigger to allow the
What are the comparison operator in SQL? Comparison operator in SQL are =, LIKE and BETWEEN
Group By clauses • It is used to group database tuples on the basis of definite common attribute value like as employees of a department. WHERE clause still can be used
can you please explain with the help of suitable example the difference between conflict equivalence and conflict serializability?
what do you mean by consistency in rdbms?
explain the steps for reduction of er model into relational model?
What is OCR? OCR (Optical Character Recognition) is a technology that enables you to change different types of machine-readable documents, like scanned paper documents, PDF fil
What are the ways in which the variable-length records arise in database systems? Storage of many record types in a file. Record types that permit variable lengths for one o
i would like to ask if you will do assignment of database number of words 1500 and how much
Rearrange Classes and Operations Sometimes, the similar operation is defined across different classes and can easily be inherited from a familiar ancestor, but more often oper
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