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vertical fragmentation
What is the use of Union and intersection operation? Union: The result of this operation contains all tuples that are either in r1 or in r2 or in both r1 and r2.Duplicate tuple
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
write on the various type of relationalkey
Server Control It is usual to control access to the data via the front end application, for example by displaying data as ‘read only'. This part of the assignment illustrates ho
please give me introduction to full data in D B M S in a short assignment
online eductional management system ke diagram
courier company er-diagram
For every multivalued attribute 'A', we make a new relation R that contains an attribute corresponding to plus the primary key attribute k of the relation that shows the entity typ
1. Develop a flowchart using the decision structure to solve the following problem. A Box Lunch Bonanza is a small catering company that offers 2 different types of box lunches
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