Tag: databases

Questions Related to databases

Choose the incorrect option about the sql server index
technology databases

  1. Indexes use B-TREE for searching data.

  2. Can create more than one non clustered index on a table.

  3. Up to 256 columns can be combined into a single composite index key.

  4. If not specified, a nonclustered index is created.

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Correct Option: C

Interface methods can be declared with which the following modifiers

technology databases

  1. public

  2. private

  3. synchronised

  4. native

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Correct Option: A

Which of the function is used to convert String to Number in java program?
technology databases

  1. toNumber()

  2. conString()

  3. valueOf()

  4. None of the Above

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Correct Option: C

Implementations of servlets include

technology databases

  1. Apache web server

  2. java.net.HttpURLConnection class

  3. Java web server Tomcat

  4. None of the Above

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Correct Option: C

The generic two-level data warehouse architecture includes which of the following?

technology databases

  1. At least one data mart

  2. Data that can extracted from numerous internal and external sources

  3. Near real-time updates

  4. All of the above.

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Correct Option: B

When a user creates an object without a TABLESPACE clause, where will Oracle store the segment?
technology databases

  1. System tablespace

  2. Users tablespace

  3. Default tablespace for the user

  4. Default tablespace for system

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Correct Option: C

Which of the following views provides all the grants on all the objects in the database?

technology databases

  1. DBA_SYS_PRIVS

  2. DBA_COL_PRIVS

  3. DBA_OBJ_PRIVS

  4. DBA_TAB_PRIVS

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Correct Option: A

What is one of the disadvantages of database mirroring?
technology databases

  1. You need to have the same hardware.

  2. The database you mirror to will be in an unused standby state.

  3. You cannot have automatic failover.

  4. You need to have at minimum three servers.

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Correct Option: B

Which command will delete all data from a table and will not write to the rollback segment?

technology databases

  1. Drop

  2. Delete

  3. Cascade

  4. Truncate

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Correct Option: D

Which of the following is not a method of a Connection Object in VB.NET?

technology databases

  1. Open

  2. BeginTransaction

  3. Execute

  4. CommitTransaction

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Correct Option: C