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NO.1 Assuming you have an employee table that stores the salary for each employee. What will this
query return?
SELECT AVG(salary), STDEV(salary) FROM employees;
A. Average salary and standard deviation for all rows.
B. Average salary and standard deviation for all rows not containing NULL salaries.
C. Average salary and standard deviation for all rows assuming zero for NULL salaries.
D. Average salary and standard deviation for all rows assuming the average value for NULL salaries.
Answer: B

NO.2 Which of the following is NOT a legal value for the BOOLEAN data type?
A. 'T' for true, and 'F' for false.
B. NULL value.
C. 't' for true, and 'f' for false.
D. 1 for true, and 0 for false.
Answer: D

NO.3 Which two statements will search text data stored in the column brands of the table products
for the string century? (Choose two.)
A. SELECT id FROM products WHERE brands = 'century';
B. SELECT id FROM products WHERE brands LIKE '*century*';
C. SELECT id FROM products WHERE brands MATCHES '*century*';
D. SELECT id FROM products WHERE bts_exists(brands, 'century');
E. SELECT id FROM products WHERE bts_contains(brands, 'century');
Answer: C,E

NO.4 Which data type's internal structure is inaccessible to the database server?
A. SET
B. Opaque
C. ROW Named
D. ROW Unnamed
Answer: B

NO.5 Which IBM Informix .NET Provider statement is NOT true?
A. It works only with Informix.
B. It uses the SQLI protocol to communicate with Informix.
C. It uses the DRDA protocol to communicate with Informix.
D. Its Connection Lifetime attribute specifies how long a connection can remain open.
Answer: C

NO.6 What is the EXECUTE IMMEDIATE statement used for?
A. To dynamically execute a SELECT statement.
B. To execute dynamically composed SQL statements.
C. To return a result set immediately from the statement.
D. To execute a particular SQL statement with a higher priority.
Answer: B

NO.7 What statement describes the logging restriction that applies to distributed queries?
A. Participating databases must be ANSI-compliant.
B. Participating databases must have buffered logging.
C. Participating databases must have unbuffered logging.
D. Participating database must have identical transaction logging types.
Answer: D

NO.8 Which languages are supported by Informix in the development of User-Defined Routines
(UDRs)?
A. Java, C and Stored Procedure Language (SPL)
B. SQL, .NET and php
C. Perl, Ruby, Python
D. None. Informix uses a proprietary language to develop UDRs
Answer: A