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How can i turn a conceptual entity relationship diagram into a logical entity relationship diagram? what do i have to do with "mandetory or" and "optional or" relationships?
sir, could anybody help me in getting complete information about the mentioned topic
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What sorts of tables one can se in designing the hierarchy of a LDB? Tables, which are having Foreign Key relations.
Define various ways in which SELECT statement can be used for record selection Technology? SELECT gives you control over a number of aspects for record retrieval: 1) Which
what are information system hirarchy?
Define Single Value and Multivalued attribute Single value attribute comprise a single atomic value for an entity and multivalued attribute may have much more than one value f
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