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Differentiate between a subquery and a join
If we need to acquire information from one or more tables after that either subquery or join can be used. If the columns which are to appear in the result table are from different tables after that a join must be employed.
Define tuple variable? Tuple variables are used for comparing two tuples in the same relation. The tuple variables are explained in the from clause by way of the as clause.
explain cascading rollback
explain equi-join using illustration
Probelm: a) In the context of OODBMS, define the following terms with appropriate examples. (i) Object class. (ii) Abstract class. (iii) Aggregation. (iv)
Describe the term- State Diagram State Diagram: An object could receive a sequence of the input instructions. The state of the object can differ depending upon sequence of in
Introductory course and so does not require any fancy coding. I will provide a guidance document to help you in producing the solutions.
explain ANSI SPARC architecture
Define blocks? The database system resides eternally on non-volatile storage, and is into fixed-length storage units known as blocks.
What is meant by log-based recovery? The most widely used structures for recording database changes is the log. The log is a sequence of log records, recording all the update a
need a DBMS system on any data for assignment.
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