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Database Management SystemExplain the select, project, join and division with the help of example.20187mProfessional Skill DevelopmentWhat do you understand by project management?20212m Compiler DesignExplain three of the targets for code optimization with examples.20234mDATABASE MANAGEMENT SYSTEMWhich of the following operations is used if we are interested in only certain columns of a table? - (i) PROJECTION (ii) SELECTION (ii) UNION (iv) JOIN20212m
PreviousWhich of the following is true? (i) a super-key is always a candidate key. (ii) every 3NF schema is also a BCNF. (iii) generalization is bottom-up approach. (iv) none of these.NextThe weak entity set does not have sufficient attributes to form. (i) Primary key (ii) Candidate key (iii) Both (i) and (ii) (iv) Super key