1
Q:

Explain Given the following SQL statement: GRANT REFERENCES ON TABLE tab1 TO USER usera.Which of the following describes what USERA is allowed to do?

A) Create a read?only view using TAB1. B) Alter TAB1 to add a check constraint.
C) Define a primary key or unique constraint on TAB1. D) Define a dependent table where TAB1 is the parent.

Answer:   D) Define a dependent table where TAB1 is the parent.



Explanation:
Q:

Proxy servers have two main purposes :

1. Improve Performance  (and)

2.  is  ______ ?

A) Transmit Request B) Decrease Requests
C) Increase Requests D) Filter Requests
 
Answer & Explanation Answer: D) Filter Requests

Explanation:
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4 31
Q:

which of the following represents a set of properties that guarantee that database transactions are processed reliably in computer science ?

A) Buffer Cache B) ACID
C) Foreign Key D) None
 
Answer & Explanation Answer: B) ACID

Explanation:

ACID means (Atomicity, Consistency, Isolation, Durability) is a set of properties of database transactions intended to guarantee validity even in the event of errors, power failures, etc.

In the context of databases, a sequence of database operations that satisfies the ACID properties and, thus, can be perceived as single logical operation on the data, is called a transaction. For example, a transfer of funds from one bank account to another, even involving multiple changes such as debiting one account and crediting another, is a single transaction.

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Job Role: Analyst , IT Trainer

5 70
Q:

With database logging, where are transaction records first placed?

A) in the logical log buffer B) in the primary chunk
C) in the physical buffer D) in a temporary database table
 
Answer & Explanation Answer: A) in the logical log buffer

Explanation:
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4 1458
Q:

Suppose an installed z/OS customer also has Power6 Servers. They are investigating consolidation of both types of servers to z/OS.Which of the following will establish the capacity for a new z/OS server?

A) AD Tools B) CP3000
C) Estimate the AIX load and add to CP3000 results. D) Run AIX in a z/OS LPAR to establish the loadWArialTimes New RomanZ
 
Answer & Explanation Answer: C) Estimate the AIX load and add to CP3000 results.

Explanation:
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3 944
Q:

Which of the following DB2 data types CANNOT be used to contain the date an employee was hired?

A) CLOB B) TIME
C) VARCHAR D) TIMESTAMP
 
Answer & Explanation Answer: B) TIME

Explanation:
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4 1433