PostgreSQL-CE 자격증 PGCES-02 시험문제와 답

IT업계에서 자신만의 위치를 찾으려면 자격증을 많이 취득하는것이 큰 도움이 될것입니다. PostgreSQL-CE 인증 PGCES-02시험은 아주 유용한 시험입니다. PostgreSQL-CE 인증PGCES-02시험출제경향을 퍼펙트하게 연구하여ITExamDump에서는PostgreSQL-CE 인증PGCES-02시험대비덤프를 출시하였습니다. ITExamDump에서 제공해드리는PostgreSQL-CE 인증PGCES-02시험덤프는 시장에서 판매하고 있는PostgreSQL-CE 인증PGCES-02덤프중 가장 최신버전덤프로서 덤프에 있는 문제만 공부하시면 시험통과가 쉬워집니다.

ITExamDump의 PostgreSQL-CE인증 PGCES-02덤프를 구매하여 공부한지 일주일만에 바로 시험을 보았는데 고득점으로 시험을 패스했습니다.이는ITExamDump의 PostgreSQL-CE인증 PGCES-02덤프를 구매한 분이 전해온 희소식입니다. 다른 자료 필요없이 단지 저희PostgreSQL-CE인증 PGCES-02덤프로 이렇게 어려운 시험을 일주일만에 패스하고 자격증을 취득할수 있습니다.덤프가격도 다른 사이트보다 만만하여 부담없이 덤프마련이 가능합니다.구매전 무료샘플을 다운받아 보시면 믿음을 느낄것입니다.

근 몇년간IT산업이 전례없이 신속히 발전하여 IT업계에 종사하는 분들이 여느때보다 많습니다. 경쟁이 이와같이 치열한 환경속에서 누구도 대체할수 없는 자기만의 자리를 찾으려면 IT인증자격증취득은 무조건 해야 하는것이 아닌가 싶습니다. PostgreSQL-CE인증 PGCES-02시험은 IT인증시험중 가장 인기있는 시험입니다. ITExamDump에서는 여러분이PostgreSQL-CE인증 PGCES-02시험을 한방에 패스하도록 실제시험문제에 대비한PostgreSQL-CE인증 PGCES-02덤프를 발췌하여 저렴한 가격에 제공해드립니다.시험패스 못할시 덤프비용은 환불처리 해드리기에 고객님께 아무런 페를 끼치지 않을것입니다.

그렇게 많은 IT인증덤프공부자료를 제공하는 사이트중ITExamDump의 인지도가 제일 높은 원인은 무엇일가요?그건ITExamDump의 제품이 가장 좋다는 것을 의미합니다. ITExamDump에서 제공해드리는 PostgreSQL-CE인증 PGCES-02덤프공부자료는PostgreSQL-CE인증 PGCES-02실제시험문제에 초점을 맞추어 시험커버율이 거의 100%입니다. 이 덤프만 공부하시면PostgreSQL-CE인증 PGCES-02시험패스에 자신을 느끼게 됩니다.

시험 번호/코드: PGCES-02

시험 이름: PostgreSQL-CE (PostgreSQL CE 8 Silver)

PGCES-02 덤프무료샘플다운로드하기: http://www.itexamdump.com/Pgces-02.html

NO.1 The "animal" table consists of the following data: Select the correct result returned by executing the
following SQL statement: SELECT name FROM animal ORDER BY weight DESC LIMIT 2 OFFSET 1;
A.A syntax error will occur.
Answer:A

PostgreSQL-CE자료   PGCES-02   PGCES-02   PGCES-02 dump   PGCES-02   PGCES-02

NO.2 PostgreSQL can use an index to access a table. Select two incorrect statements about indexes.
A.An index is created by 'CREATE INDEX', and deleted by 'DROP INDEX'.
B.By using an index effectively, searching and sorting performs faster.
C.There are B-tree, Hash, R-tree and GiST index types.
D.By creating an index, performance always improves.
E.Creating an unused index does not affect the performance of a database at all.
Answer:D E

PostgreSQL-CE최신덤프   PGCES-02인증   PGCES-02   PGCES-02자격증

NO.3 Select the most suitable statement about PostgreSQL from below.
A.PostgreSQL is a card-type database management system.
B.PostgreSQL is a hierarchical database management system.
C.PostgreSQL is a network-type database management system.
D.PostgreSQL is an XML database management system.
E.PostgreSQL is a relational database management system.
Answer:E

PostgreSQL-CE자료   PGCES-02   PGCES-02시험문제   PGCES-02

NO.4 The following is the result of executing the createlang command which is installed with PostgreSQL.
$ createlang -U postgres --list mydb Procedural Languages Name | Trusted? ---------+--------- plpgsql | yes
Select two correct statements from below.
A.The procedural language plpgsql is installed in the database mydb using the above command.
B.The procedural language plpgsql can be used in the database mydb.
C.plpgsql is a trusted language, so it can execute the OS commands on the server side.
D.plpgsql is a trusted language, so it can read/write OS files on the server side.
E.plpgsql is a safe language with restricted operations.
Answer:B E

PostgreSQL-CE   PGCES-02   PGCES-02자료   PGCES-02자격증

NO.5 Select two suitable statements regarding the data types of PostgreSQL.
A.One field can handle up to 1GB of data.
B.'n' in CHARACTER(n) represents the number of bytes.
C.Only the INTEGER type can be declared as an array.
D.There is a non-standard PostgreSQL data type, called Geometric data type, which handles
2-dimensional data.
E.A large object data type can be used to store data of unlimited size.
Answer:A D

PostgreSQL-CE pdf   PGCES-02덤프   PGCES-02

NO.6 A table named "sample" is defined as below. Select two statements which will generate a constraint
error. CREATE TABLE sample ( i INTEGER PRIMARY KEY, j INTEGER, CHECK ( i > 0 AND j < 0 ) );
A.INSERT INTO sample VALUES (1, 0);
B.INSERT INTO sample VALUES (2, -2);
C.INSERT INTO sample VALUES (3, NULL);
D.INSERT INTO sample VALUES (NULL, -4);
E.INSERT INTO sample VALUES (5, -5);
Answer:A D

PostgreSQL-CE최신덤프   PGCES-02기출문제   PGCES-02자격증   PGCES-02   PGCES-02

NO.7 Select three SQL statements which return NULL.
A.SELECT 0 = NULL;
B.SELECT NULL != NULL;
C.SELECT NULL IS NULL;
D.SELECT NULL;
E.SELECT 'null'::TEXT;
Answer:A B D

PostgreSQL-CE pdf   PGCES-02   PGCES-02인증

NO.8 The "sample" table consists of the following data: How many rows are returned by executing the
following SQL statement? SELECT * FROM sample WHERE v ~ 'ab';
A.0 rows
B.1 row
C.2 rows
D.3 rows
E.4 rows
Answer:C

PostgreSQL-CE   PGCES-02기출문제   PGCES-02   PGCES-02   PGCES-02시험문제   PGCES-02

NO.9 Select two correct descriptions about views.
A.A view is created by 'DECLARE VIEW', and deleted by 'DROP VIEW'.
B.A view is a virtual table which does not exist.
C.A view is created to simplify complicated queries.
D.You can create a view with the same name as already existing tables.
E.A view only exists while the postmaster is running, and is deleted when the postmaster stops.
Answer:B C

PostgreSQL-CE   PGCES-02기출문제   PGCES-02덤프   PGCES-02인증   PGCES-02

NO.10 The following SQL statements were executed using psql. Select the appropriate statement about the
result. LISTEN sign_v; BEGIN; NOTIFY sign_v; COMMIT; LISTEN sign_v;
A.At the point that 'NOTIFY sign_v' is executed, a message that starts with "Asynchronous notification
'sign_v' received" is output.
B.At the point that 'COMMIT' is executed, a message that starts with "Asynchronous notification 'sign_v'
received" is output.
C.At the point that 'SELECT * FROM pg_user;" is executed, a message that starts with "Asynchronous
notification 'sign_v' received" is output.
D.When 'LISTEN sign_v' is executed for the second time, a message that starts with "Asynchronous
notification 'sign_v' received" is output.
E.The message "Asynchronous notification 'sign_v' received" is not received while in this connection.
Answer:B

PostgreSQL-CE인증   PGCES-02 dumps   PGCES-02 dumps   PGCES-02시험문제

NO.11 Select the correct SQL statement which concatenates strings 'ABC' and 'abc' to form 'ABCabc'.
A.SELECT 'ABC' . 'abc';
B.SELECT cat('ABC', 'abc') FROM pg_operator;
C.SELECT 'ABC' 'abc';
D.SELECT 'ABC' 'abc' FROM pg_operator;
E.SELECT 'ABC' || 'abc';
Answer:E

PostgreSQL-CE기출문제   PGCES-02 dumps   PGCES-02기출문제   PGCES-02

NO.12 The "sample" table consists of the following data: How many rows are returned by executing the
following SQL statement? SELECT DISTINCT ON (data) * FROM sample;
A.2 rows
B.3 rows
C.4 rows
D.5 rows
E.6 rows
Answer:B

PostgreSQL-CE기출문제   PGCES-02   PGCES-02 dump

NO.13 Select two suitable statements regarding the following SQL statement: CREATE TRIGGER trigger_1
AFTER UPDATE ON sales FOR EACH ROW EXECUTE PROCEDURE write_log();
A.It is defining a trigger "trigger_1".
B.Every time 'UPDATE' is executed on the "sales" table, the "write_log" function is called once.
C.The "write_log" function is called before 'UPDATE' takes place.
D.'UPDATE' is not executed if "write_log" returns NULL.
E.'DROP TRIGGER trigger_1 ON sales;' deletes the defined trigger.
Answer:A E

PostgreSQL-CE pdf   PGCES-02   PGCES-02   PGCES-02 dump   PGCES-02

NO.14 The table "score" is defined as follows: gid | score -----+------ 1 | 70 1 | 60 2 | 100 3 | 80 3 | 50 The
following query was executed. Select the number of rows in the result. SELECT gid, max(score) FROM
score GROUP BY gid HAVING max(score) > 60;
A.1 row
B.2 rows
C.3 rows
D.4 rows
E.5 rows
Answer:C

PostgreSQL-CE   PGCES-02자격증   PGCES-02   PGCES-02시험문제

NO.15 Select two suitable statements regarding creating a new table.
A.There is no upper limit to the number of columns in a table.
B.A newly created table is empty and has 0 rows.
C.You can only use alphabetic characters for a table name.
D.The row name must be within 16 characters.
E.The SQL 'CREATE TABLE' statement is used to create a new table.
Answer:B E

PostgreSQL-CE덤프   PGCES-02   PGCES-02

NO.16 Select one incorrect statement concerning the relational data model.
A.It expresses the real world in a collection of 2-dimensional tables called a relation.
B.It is a model based on set theory.
C.It has a logical structure independent of physical data structure.
D.It is made up of a multiple stage hierarchy where each of the set elements has parent child relationships.
E.It is a model that was proposed by E.F. Codd in 1970.
Answer:D

PostgreSQL-CE   PGCES-02   PGCES-02   PGCES-02 dumps

NO.17 Select two suitable statements about sequences.
A.A sequence always returns a 4-byte INTEGER type value, so the maximum value is 2147483647.
B.A sequence is defined by 'CREATE SEQUENCE', and deleted by 'DROP SEQUENCE'.
C.Although the "nextval" function is called during a transaction, it will have no effect if that transaction is
rolled back.
D.A sequence always generates 0 or consecutive positive numbers.
E.A sequence number can be set by calling the "setval" function.
Answer:B E

PostgreSQL-CE   PGCES-02   PGCES-02시험문제   PGCES-02

NO.18 Table "t1" is defined as follows: CREATE TABLE t1 (value VARCHAR(5)); A set of SQL statements were
executed in the following order. Select the number of rows that table "t1" has after execution. BEGIN;
INSERT INTO t1 VALUES ('AA'); SAVEPOINT point1; INSERT INTO t1 VALUES ('BB'); SAVEPOINT
point2; INSERT INTO t1 VALUES ('CC'); ROLLBACK TO point1; INSERT INTO t1 VALUES ('DD'); END;
A.1 row
B.2 rows
C.3 rows
D.4 rows
E.0 rows
Answer:B

PostgreSQL-CE dumps   PGCES-02최신덤프   PGCES-02 pdf   PGCES-02시험문제

NO.19 The table "custom" is defined below. The "id" column and "introducer" column are of INTEGER type,
and the "email" column is of TEXT type. id | email | introducer ----+----------------+----------- 2 |
aaa@example.com | 1 3 | bbb@example.com | 2 4 | ccc@example.com | 2 Three SQL statements were
executed in the following order: INSERT INTO custom SELECT max(id) 1, 'ddd@example.com', 4 FROM
custom; UPDATE custom SET introducer = 999 WHERE email = 'bbb@example.com'; DELETE FROM
custom WHERE introducer NOT IN (SELECT id FROM custom); Select the number of rows in the
"custom" table after the execution.
A.0 rows
B.1 row
C.2 rows
D.3 rows
E.4 rows
Answer:C

PostgreSQL-CE인증   PGCES-02   PGCES-02 dump   PGCES-02

NO.20 Select an incorrect statement regarding the following SQL statement. Note that "user_view" is a view.
CREATE OR REPLACE RULE rule_1 AS ON UPDATE TO user_view DO INSTEAD NOTHING;
A.It is defining a rule "rule_1".
B.It will replace "rule_1" if it already exists.
C.Executing 'UPDATE user_view' will no longer output errors.
D.When executing 'UPDATE user_view', data is updated in the table that is the origin of the view.
E.'DROP RULE rule_1 ON user_view' deletes the above definition.
Answer:D

PostgreSQL-CE자료   PGCES-02   PGCES-02   PGCES-02   PGCES-02   PGCES-02

NO.21 Select two suitable statements about major version upgrades of PostgreSQL from below.
A.You can use the databases of the old major version.
B.To use the data from the old version, you only need to replace the program.
C.To use the data from the old version, you need to conduct a backup and restore.
D.There is a possibility of configuration parameter changes after major version upgrades.
E.Upgrade scripts can be executed while the old version of PostgreSQL is running.
Answer:C D

PostgreSQL-CE   PGCES-02   PGCES-02자격증   PGCES-02인증   PGCES-02인증

NO.22 Select two incorrect statements regarding 'DOMAIN'.
A.When defining a domain, you can add a default value and constraints to the original data.
B.Domain is a namespace existing between databases and objects such as tables.
C.A domain is created by 'CREATE DOMAIN'.
D.A domain can be used as a column type when defining a table.
E.To define a domain, both input and output functions are required.
Answer:B E

PostgreSQL-CE   PGCES-02기출문제   PGCES-02   PGCES-02   PGCES-02

NO.23 Given the following two table definitions, select one SQL statement which will cause an error. CREATE
TABLE sample1 (id INTEGER, data TEXT); CREATE TABLE sample2 (id INTEGER);
A.SELECT id AS data, data FROM sample1;
B.SELECT id, id FROM sample1;
C.SELECT s1.id, s2.id FROM sample1 AS s1, sample1 AS s2;
D.SELECT s1.id, s2.id FROM sample1 s1, sample2 s2;
E.SELECT s1.id, s2.data FROM sample1 s1, sample2 s2;
Answer:E

PostgreSQL-CE자격증   PGCES-02   PGCES-02   PGCES-02 pdf   PGCES-02 pdf

NO.24 Select two transaction isolation levels supported in PostgreSQL.
A.DIRTY READ
B.READ COMMITTED
C.REPEATABLE READ
D.PHANTOM READ
E.SERIALIZABLE
Answer:B E

PostgreSQL-CE dumps   PGCES-02기출문제   PGCES-02 pdf   PGCES-02 dumps

NO.25 SQL statements were executed in the following order: CREATE TABLE fmaster (id INTEGER
PRIMARY KEY, name TEXT); CREATE TABLE ftrans (id INTEGER REFERENCES fmaster (id), stat
INTEGER, date DATE); INSERT INTO fmaster VALUES (1, 'itemA'); INSERT INTO ftrans VALUES (1, 1,
CURRENT_DATE); Select two SQL statements that will generate an error when executed next.
A.INSERT INTO ftrans VALUES (1, 1, CURRENT_DATE);
B.INSERT INTO ftrans VALUES (2, 1, '2007-07-07');
C.UPDATE fmaster SET name = 'itemAX' WHERE id = 1;
D.UPDATE fmaster SET id = 100 WHERE id = 1;
E.UPDATE ftrans SET id = 200 WHERE id = 1;
Answer:A C

PostgreSQL-CE dump   PGCES-02   PGCES-02

NO.26 The tables "t1" and "t2" are defined below. The tables "t1" and "t2" have columns "id" which are type of
INTEGER and column "name"s which are type of TEXT. t1 t2 The following SQL command was executed.
Select the number of rows in the result. SELECT * FROM t1 NATURAL FULL OUTER JOIN t2;
A.2 rows
B.3 rows
C.4 rows
D.5 rows
E.6 rows
Answer:D

PostgreSQL-CE인증   PGCES-02   PGCES-02   PGCES-02 dumps   PGCES-02   PGCES-02

NO.27 Four SQL statements were executed in the following order. CREATE TABLE foo (bar INT); ALTER
TABLE foo ALTER bar TYPE BIGINT; ALTER TABLE foo ADD baz VARCHAR(5); ALTER TABLE foo
DROP bar; Select two SQL statements that generate an error when executed.
A.INSERT INTO foo VALUES ('12345');
B.INSERT INTO foo VALUES ('5000000000');
C.INSERT INTO foo VALUES ('ABC');
D.INSERT INTO foo VALUES (2000000000);
E.INSERT INTO foo VALUES (NULL);
Answer:B D

PostgreSQL-CE자료   PGCES-02인증   PGCES-02 dump

NO.28 Select the most suitable statement about the PostgreSQL license from below.
A.PostgreSQL is distributed under the GPL license.
B.PostgreSQL is distributed under the PostgreSQL license.
C.PostgreSQL is distributed under the LGPL license.
D.PostgreSQL is distributed under the BSD license.
E.PostgreSQL is distributed under the X11(MIT) license.
Answer:D

PostgreSQL-CE   PGCES-02   PGCES-02

NO.29 Select two incorrect statements concerning PostgreSQL license.
A.It can be used freely.
B.It can be duplicated freely.
C.It can be freely redistributed.
D.Developers are responsible for its maintenance support.
E.Developers are only responsible for handling its crucial faults.
Answer:D E

PostgreSQL-CE   PGCES-02   PGCES-02자격증   PGCES-02   PGCES-02 dump   PGCES-02자료

NO.30 Table "t1" is defined below. Table "t1" has a column "id" of type INTEGER, and a column "name" of
type TEXT. t1: The following SQL is executed while client "A" is connected. BEGIN; SELECT * FROM t1
WHERE id = 2 FOR UPDATE; SELECT * FROM t1 WHERE id = 1 FOR UPDATE; -- (*) While the second
'SELECT' statement, shown with (*), is being executed, a separate client "B" connects and executes the
following SQL. Select the correct statement about the execution results. UPDATE t1 SET name = 'turtle'
WHERE id = 2; Note: the default transaction isolation level is set to "read committed".
A.The update process for client "B" is blocked until the current connection for client "A" is finished.
B.The update process for client "B" is blocked until the current transaction for client "A" is finished.
C.The 'UPDATE' process for client "B" proceeds regardless of the condition of client "A".
D.The process of client "B" immediately generates an error.
E.The processes for both clients are blocked, and an error stating that a deadlock has been detected is
generated.
Answer:B

PostgreSQL-CE   PGCES-02 dumps   PGCES-02최신덤프   PGCES-02   PGCES-02

네트웨크시대인 지금 인터넷에 검색하면 수많은PostgreSQL-CE인증 PGCES-02시험공부자료가 검색되는데 그중에서도ITExamDump에서 출시한 PostgreSQL-CE인증 PGCES-02덤프가 가장 높은 인지도를 지니고 있습니다. PostgreSQL-CE인증 PGCES-02덤프에는PostgreSQL-CE인증 PGCES-02시험문제의 기출문제와 예상문제가 수록되어있어 덤프에 있는 문제만 잘 공부하시면 시험은 가볍게 패스가능합니다. PostgreSQL-CE인증 PGCES-02시험을 통과하여 자겨증취득하는 꿈에 더욱 가까이 다가가세요.