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APPLY LATEST GOVT JOBS

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211 The natural join is equal to :
(A). Cartesian Product
(B). Combination of Union and Cartesian product
(C). Combination of selection and Cartesian product
(D). Combination of projection and Cartesian product


212 Which one of the following is not true for a view:
(A). View is derived from other tables.
(B). View is a virtual table.
(C). A view definition is permanently stored as part of the database.
(D). View never contains derived columns.


213 A primary key if combined with a foreign key creates
(A). Parent-Child relationship between the tables that connect them.
(B). Many to many relationship between the tables that connect them.
(C). Network model between the tables that connect them.
(D). None of the above.


214 In E-R Diagram relationship type is represented by
(A). Ellipse
(B). Dashed ellipse
(C). Rectangle
(D). Diamond


215 Hierarchical model is also called
(A). Tree structure
(B). Plex Structure
(C). Normalize Structure
(D). Table Structure