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Give the general form of SQL query? Select A1, A2............., An From R1, R2..............., Rm Where P
Load sample data into the database tables design and test queries to return the following information • All rows and columns for employees • All rows and columns for customers •
State about the Activity Diagram Activity diagrams show flow from one activity to other. It is an ongoing non atomic execution within a state machine. Activity finally results
Give the two reasons for allowing concurrency
aggregation
Define the Attribute Inheritance The attributes of a higher level entity set are inherited through a lower level entity set made by specialization-generalization hierarchy. Nam
INSERT INTO command : Values can be inserted for all columns or for the selected columns Values can be given by sub query. In place of values parameter substitution
What are called multilevel indices? Indices with two or more levels are known as multilevel indices.
A View may be defined of as a virtual table, that is, a table that does not really exist in its own right but is instead inferred from one or more underlying base data table. T
what is RDBMS? how it works? good example.
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