최신 1z1-909 무료덤프 - Oracle MySQL 8.0 Database Developer

문제1

Examine this statement and output:

What causes the error?

A. The database client process does not have sufficient privilege.

B. The database user does not have sufficient privilege.

C. The database server process does not have sufficient privilege.

D. The database server is running in read-only mode.

E. The engine is disabled.

F. The set local_infile option has not been enabled.

정답: C

문제2

Examine these statements and output:

Now, examine this command:
Mysql> ROLLBACK;
What is true about the effect of the command?

A. It undoes both insert and update commands.

B. It undoes the insert command.

C. It undoes the update command.

D. It has no effect.

E. It returns an error because there is no active transaction.

정답: B

문제3

Examine this statement:
DECLARE not_found CONDITION FOR SQLSTATE '02000';
In which two statements can not found be used?

A. in a signal statement

B. in a leave statement to exit a loop

C. in an if statement

D. in a while loop

E. in a handler declaration

정답: A,D

문제4

Examine the output:

Which explain command will obtain the output?

A. EXPLAIN PARTITIONS

B. EXPLAIN ANALYZE

C. EXPLAIN FORMAT=TREE

D. EXPLAIN PORMAT^TRADITIONAL

E. EXPLAIN PORMAT=JSON

정답: E

문제5

Examine these statement which execute successfully:

Now, examine this desired output:

Which two queries will produce the out?

A.

B.

C.

D.

E.

정답: A,B

문제6

Which two statements are true about aggregate functions?

A. SUM () returns o if there are no rows to aggregate.

B. MIN () cannot use distinct when it executes as a Windows function.

C. COUNT (distinct) returns a count of the number of rows with different values including Null.

D. MAX () returns null if there are no rows to aggregate.

E. AVG () does not allow use of the distinct option.

정답: E

문제7

Examine these statements issued from Session 1 which execute successfully:

Now, examine these statements issued from Session 2 which execute successfully:
Session 2>
BEGIN;
UPDATE band SET song=CONCAT ("Here Comes the ", song) WHERE song LIKE ' %Sun ; Which two are true?

A. Statements in Session 2 are committed.

B. Session 1 must commit before the update in Session 2 can complete.

C. Session 2 does not start a transaction.

D. Session 1 does not block Session 2.

E. Session 2 takes an exclusive lock on all the rows in the band table.

F. Session 1 takes a shared lock on all the rows in the band table.

정답: A,B

최신 1z1-909 무료덤프 - Oracle MySQL 8.0 Database Developer

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