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Database systems have many opposite efforts ?
DDL Compiler The DDL compiler changes the data definition statements (such as CREATE TABLE .... in SQL) into a set of tables having metadata tables. These tables have infor
Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department.
In the architecture of a database system which external level used? In the architecture of a database system view external level used.
Define what Immediate database modification technique uses? Ans: Both undo and redo.
Funky Festivals Specification Funky Festivals organise music festivals which take place at various venues throughout the UK. A venue needs to be booked before a Festival can t
Which operations need the participating relations to be union compatible? A UNION, INTERSECTION and DIFFERENCE operations need the participating relations to be union compatibl
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This constraint shows that the key attribute value in each tuple must be unique, i.e., no two tuples have the similar value for the key attribute. This is because the value of the
How persistent programming languages differ from traditional programming languages? Database languages vary from traditional programming languages in that they directly manipul
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