A table with three columns is given below. For each relational operati

1.	A table with three columns is given below. For each relational operation given in the 1st column find the best matches from 2nd and 3rd columns.OperationSymbolFeature1. Selecta) ∩i) output will be only those rows in the first operand table that are not in the second operand.2. Unionb) - (minus)ii) Gives the horizontal subset of the operand table3. Set Differencec) σ (sigma)iii) Gives a table that contains all rows of the operand tablesd) Uiv) Gives the vertical subset of the operand table.
Answer» 1. Select → c) o → (ii) 2. Union → d) ∪ → (iv) 3. Set difference → b) – → (i)

A table with three columns is given below. For each relational operation given in the 1st column find the best matches from 2nd and 3rd columns.OperationSymbolFeature1. Selecta) ∩i) output will be only those rows in the first operand table that are not in the second operand.2. Unionb) - (minus)ii) Gives the horizontal subset of the operand table3. Set Differencec) σ (sigma)iii) Gives a table that contains all rows of the operand tablesd) Uiv) Gives the vertical subset of the operand table.

Answer»

1. Select → c) o → (ii)

2. Union → d) ∪ → (iv)

3. Set difference → b) – → (i)