What do you understand by the term data model? Explain the difference between a data model and its implementation. Why is the difference important?
Answer to relevant QuestionsWhat do you understand by the term relational system? Distinguish between relational and non-relational system.As explained in the section 3.6, the catalog is self-describing that is, it includes entries for the catalog relvars themselves. Extend Fig. 3.6 to include the necessary entries for the TABLE and COLUMN relvars themselves.Again using the suppliers parts projects database, write a program with embedded SQL statements to list all suppliers in supplier number order. Each supplier should be immediately followed in the listing by all projects ...In the network shown find Vo using superposition Find in the network shown using superposition.
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