Tag: databases

Questions Related to databases

Which of the following is the lowest cost DB2 product that can be legally installed on a Windows server that has 2 CPUs?

  1. DB2 Everyplace

  2. DB2 Express Edition

  3. DB2 Workgroup Server Edition

  4. DB2 Enterprise Server Edition


Correct Option: B

AI Explanation

To answer this question, you need to understand the different editions of DB2 and their pricing.

Let's go through each option to understand why it is correct or incorrect:

Option A) DB2 Everyplace - This option is incorrect because DB2 Everyplace is designed for mobile devices and is not intended for installation on a Windows server.

Option B) DB2 Express Edition - This option is correct because DB2 Express Edition is the lowest cost DB2 product that can be legally installed on a Windows server with 2 CPUs. It is designed for small to medium-sized businesses and has a lower price point compared to other editions.

Option C) DB2 Workgroup Server Edition - This option is incorrect because DB2 Workgroup Server Edition is a more advanced edition compared to DB2 Express Edition. It is designed for larger workgroups and has a higher price point.

Option D) DB2 Enterprise Server Edition - This option is incorrect because DB2 Enterprise Server Edition is the most advanced edition of DB2 and is designed for enterprise-level applications. It has a higher price point compared to the other editions.

The correct answer is B) DB2 Express Edition. This option is correct because it is the lowest cost DB2 product that can be legally installed on a Windows server with 2 CPUs.

On which two of the following database objects may the SELECT privilege be controlled?

  1. Index

  2. Sequence

  3. Nickname

  4. View


Correct Option: C,D

AI Explanation

To answer this question, you need to understand the concept of privileges in a database. Privileges control what actions can be performed on database objects, such as selecting data from a table or modifying its structure.

Let's go through each option to understand why it is correct or incorrect:

Option A) Index - The SELECT privilege cannot be controlled on an index. An index is a database object that improves the performance of queries by allowing faster data retrieval. However, it does not store the actual data itself, so there is no need to control the SELECT privilege on an index.

Option B) Sequence - The SELECT privilege cannot be controlled on a sequence. A sequence is a database object that generates unique numbers, typically used for generating primary key values. The SELECT privilege is not relevant for sequences as they are not queried like tables or views.

Option C) Nickname - The SELECT privilege can be controlled on a nickname. A nickname is a database object that provides a local name or alias for a remote table or view in a distributed database system. Controlling the SELECT privilege on a nickname allows you to determine who can access the remote data through the nickname.

Option D) View - The SELECT privilege can be controlled on a view. A view is a virtual table based on the result of a query. By controlling the SELECT privilege on a view, you can restrict who can retrieve data from the view, providing an additional layer of security.

The correct answer is C) Nickname and D) View. These options are correct because the SELECT privilege can be controlled on both nicknames and views to regulate access to the data they represent.

Which of the following DB2 objects can be referenced by an INSERT statement to generate values for a column?

  1. Identity column

  2. Table function

  3. Sequence

  4. Trigger


Correct Option: C

Which of the following events will NOT cause a trigger to be activated?

  1. A select operation

  2. An update operation

  3. An insert operation

  4. A delete operation


Correct Option: A

Which of the following DB2 data types can NOT be used to create an identity column?

  1. SMALLINT

  2. NUMERIC

  3. INTEGER

  4. DOUBLE


Correct Option: D

When does a view get populated?

  1. When it is created

  2. When it is referenced in an INSERT statement

  3. Any time an executable SQL statement references it

  4. The first time any executable SQL statement references it


Correct Option: C