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IBM C2090-548 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Database Recovery and Availability | - Recovery mechanisms
|
| Topic 2: Database Definition and Management | - Database design and DBD/PSB concepts
|
| Topic 3: Performance and Tuning | - Optimization techniques
|
| Topic 4: IMS Environment and Architecture | - IMS data organization concepts
|
| Topic 5: Security and Access Control | - Access control mechanisms
|
IBM Certified Database Administrator - IBM IMS Sample Questions:
1. Which of the following options best describes the differences between Label Based Access Control (LBAC) and Row and Column Access Control (RCAC)?
A) LBAC allows you to protect access only to rows, while RCAC allows you to protect both rows and columns.
B) RCAC returns the data based on what is being asked (data centric), while LBAC returns data based on who is asking what (user centric). Users with DATAACCESS authority are exempt from the Row and Column Access Control rules.
C) With RCAC users do not get an error when accessing protected data, while with LBAC users can get an error if they don't have the necessary credentials to access a LBAC protected column.
D) RCAC is a fixed label security model designed for the US government while LBAC is a general purpose security model best suited for commercial customers.
2. What is the DB2 replication center?
A) The replication center is a GUI that allows you to replicate tables in your current DB2database.
B) The replication center is a GUI that is used to administer replication between a DB2 databaseand another relational database (DB2 or non-DB2).
C) The replication center is a GUI that is used transfer messages that are queued in themiddleware transaction software (such as IBM MQ) to the DB2 database.
D) DB2 does not have a replication center.
3. What is the role of the XML data type in DB2?
A) The XML data type allows a parser to use the metadata in a table to link to an external XMLdocument stored outside of the columns of a table.
B) The XML data type allows you to link a reference to an XML document stored outside of thecolumns of a table.
C) The XML data type allows you to store well-formed XML documents in their hierarchical formwithin the columns of a table.
D) The XML data type does not exist.
4. What is the purpose of the Adaptive, self-tuning memory allocation feature in DB2?
A) The purpose of this feature is for the system to deliver to you a report of tuning specifications for the database so that you can update the configuration parameters by hand.
B) This feature will help to reduce the task of configuring your DB2 server by continuously updating configuration parameters, resizing buffer pools, and dynamically determining the total amount of memory to be used by the database.
C) This feature will detect memory allocation expansion in the database and deliver a warning to the DBA to let them know when the database is nearing a threshold space allocation limit.
D) This feature does not exist in DB2.
5. Which one of the following options contains a benefit of the Java Generic Table Functions?
A) Java Generic Table Functions must run on a separate server, thus they don't consume DB2 resources.
B) Java Generic Table Functions allow you to specify the output of a table function when you reference it, rather than when you create it.
C) Java Generic Table Functions can be implemented in any programming language.
D) Java Generic Table Functions allow you to specify the output of a table function when you create it, rather than when you reference it.
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: B | Question # 3 Answer: C | Question # 4 Answer: B | Question # 5 Answer: B |




