Tag: databases

Questions Related to databases

  1. Outer joins

  2. Multi-table updates and deletes

  3. Equi-joins

  4. Equi-join with a text column in select list


Correct Option: C
  1. All select lists in the UNION must have the same number of expressions

  2. Corresponding columns must have the same column names

  3. Corresponding columns must be of the same datatype or the server must be able to implicitly convert them

  4. Corresponding columns must be in the same order


Correct Option: A,C,D

Choose the correct statements about the union clause in ASE (Choose 2)

  1. Duplicate rows are removed from the result set by default

  2. ASE evaluates a statement containing union operators from left to right

  3. Order by and group by clauses are not allowed in a union query

  4. The into clause can be used only in the first query


Correct Option: A,B,D

Which of the following are true about triggers? (Choose 2)

  1. the inserted and deleted tables are created manually

  2. triggers can be disabled using alter table

  3. a single trigger can be created for both insert and delete

  4. @@sqlstatus contains the number of rows affected


Correct Option: B,C
  1. 'return', without a return value

  2. 'rollback transaction'

  3. 'rollback trigger'

  4. the built-in function 'update()'


Correct Option: A,B

Which ASE table contains the source code of a stored procedure?

  1. sysprocedures

  2. syscomments

  3. syslogs

  4. systext


Correct Option: B

The following trigger exists: create trigger trig on t for insert, update, delete as begin print 'This is 'trig' ' end The following command is now executed: create trigger trig on t for insert as begin print 'This is 'trig' ' end After executing this command, for which DML actions on table 't' will a trigger be fired?

  1. insert

  2. update

  3. insert, update, delete

  4. delete,update


Correct Option: A

Creation of which DB objects will cause a DDL trigger to fire?

  1. Index

  2. Cluster

  3. Package

  4. DB links

  5. Function


Correct Option: A,C,E