Vendor: IBM
Exam Code: C2090-556
Exam Name: Informix 11.50 Application Developer
QUESTION 1
What Informix onconfig parameter is used to enable specific user level SQL tracing?
A. SQLIDEBUG
B. SQLTRACE
C. SQL_XTRACE
D. TRACE_SQL
Answer: B
QUESTION 2
What are the two valid methods to obtain trace data for diagnosing JDBC problems with the IBM Data Server Driver for JDBC and SQLJ type 4 connectivity? (Choose two.)
A. Set theibm.jcc.override.trace property.
B. Set theifx.jcc.override.traceFile property.
C. Set the db2.jcc.override.traceFile property.
D. Set theifx.jcc.override.traceDirectory property.
E. Set the db2.jcc.override.traceDirectory property.
Answer: CE
QUESTION 3
What is the syntax to query a table that resides on a remote Informix database?
A. database@server:[owner.]table
B. database@server:databasename:[owner.]table
C. database@server:user:password:[owner.]table
D. database@server:databasename:user:password:[owner.]table
Answer: A
QUESTION 4
Which temporary table statement is NOT true?
A. The table can use multipledbspaces.
B. The table can have fragmented indexes.
C. Temporary tables are visible to all users.
D. The table exists until the database is closed.
Answer: C
QUESTION 5
In an ANSI compliant database, what value of SQLCODE indicates a successful query that returned no rows?
A. 100
B. -330
C. -201
D. -1
Answer: A
QUESTION 6
Which Committed Read isolation level statement is correct?
A. It locks all rows examined.
B. It does not check for locks.
C. It checks for locks after returning a row.
D. It checks for locks before returning a row.
Answer: D
QUESTION 7
Which two values can be used for connection type field from sqlhosts file when using Distributed Relational Database Architecture (DRDA) protocol?
(Choose two.)
A. ontlitcp
B. onipcshm
C. onsoctcp
D. drtlitcp
E. drsoctcp
Answer: DE
QUESTION 8
Which type of isolation level results in a lock on every row a query examines in order to retrieve any row from the result set?
A. DIRTY READ
B. COMMITTED READ
C. CURSOR STABILITY
D. REPEATABLE READ
Answer: D
QUESTION 9
How can you prevent concurrency problems when other users are modifying a nonlogging or raw table?
A. Lock the table in exclusive mode for the whole transaction OR use repeatable read isolation
level for the whole transaction.
B. Lock the table in exclusive mode for the whole transaction OR use committed read isolation
level for the whole transaction.
C. Lock the table in shared mode for the whole transaction OR use repeatable read isolation level
for the whole transaction.
D. Lock the table in shared mode for the whole transaction OR use committed read isolation level
for the whole transaction.
Answer: A
QUESTION 10
Given the attached exhibit, what value does Mary see for their savings account?
A. 0
B. 100
C. 200
D. -100
Answer: B
QUESTION 11
A user has opened two sessions, SESSION_1 and SESSION_2, connecting to the same database containing a table named customer.
The following query is executed first from SESSION_1 and then from SESSION_2 (without closing SESSION_1):
SELECT * FROM customer INTO TEMP cust_temp
What is the outcome in SESSION_2?
A. A locking error.
B. SELECT query will wait till SESSION_1 has ended.
C. Error indicating Temp table (cust_temp) already exists.
D. All rows from customer table will be retrieved intocust_temp table.
Answer: D
QUESTION 12
What are user created temporary tables used for?
A. To persistently write temporary data to disk.
B. To share result sets across multiple sessions.
C. To access a temporary result set within one session.
D. To automatically delete data based on a time policy.
Answer: C
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