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DATABASE MANAGEMENT SYSTEMA row from a table is selected by - (i) selection operator - (ii) projection operator - (iii) union operator - (iv) none of these20232mDatabase Management SystemExplain the following operations with the help of examples: (i) Generalized projection (ii) Outer join (iii) Aggregate function20207mDATABASE MANAGEMENT SYSTEMWhich join refers to join records from the right table that have no matching key in the left table and are included in the result set? - (i) Left outer join (i) Right outer join (iii) Full outer join (iv) Half outer join20212mDatabase Management SystemExplain the select, project, join and division with the help of example.20187m
PreviousThe relational model feature is that there - (i) is no need for primary key data (ii) is much more data independence than some other database models (iii) are explicit relationships among records (iv) are tables with many dimensionsNextWhich of the following is the original purpose of SQL? - (i) To specify the syntax and semantics of SQL data definition language (ii) To specify the syntax and semantics of SQL manipulation language (ii) To define the data structures (iv) All of the above