PostgreSQL-CE 자격증 PGCES-02 시험문제와 답

제일 빠른 시일내에 제일 간단한 방법으로PostgreSQL-CE인증 PGCES-02시험을 패스하는 방법이 없냐구요? ITExamDump의PostgreSQL-CE인증 PGCES-02덤프를 공부하시면 가능합니다. ITExamDump의PostgreSQL-CE인증 PGCES-02덤프는 많은 분들이 검증한 가장 유력한PostgreSQL-CE인증 PGCES-02시험공부자료입니다. 덤프의 문제만 기억하시면 패스는 문제없기에 제일 빠른 시일내에 시험을 패스하여 자격증 취득이 가능합니다.

아직도 PostgreSQL-CE인증PGCES-02시험준비를 어떻게 해야 할지 망설이고 계시나요? 고객님의 IT인증시험준비길에는 언제나 ITExamDump가 곁을 지켜주고 있습니다. ITExamDump시험공부자료를 선택하시면 자격증취득의 소원이 이루어집니다. PostgreSQL-CE인증PGCES-02시험덤프는ITExamDump가 최고의 선택입니다.

PostgreSQL-CE인증 PGCES-02시험을 등록했는데 마땅한 공부자료가 없어 고민중이시라면ITExamDump의PostgreSQL-CE인증 PGCES-02덤프를 추천해드립니다. ITExamDump의PostgreSQL-CE인증 PGCES-02덤프는 거의 모든 시험문제를 커버하고 있어 시험패스율이 100%입니다. ITExamDump제품을 선택하시면 어려운 시험공부도 한결 가벼워집니다.

시험 번호/코드: PGCES-02

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

자기한테 딱 맞는 시험준비공부자료 마련은 아주 중요한 것입니다. ITExamDump는 업계에 많이 알려져있는 덤프제공 사이트입니다. ITExamDump덤프자료가 여러분의 시험준비자료로 부족한 부분이 있는지는 구매사이트에서 무료샘플을 다운로드하여 덤프의일부분 문제를 우선 체험해보시면 됩니다. ITExamDump에서 제공해드리는 퍼펙트한 덤프는 여러분이 한방에 시험에서 통과하도록 최선을 다해 도와드립니다.

모두 아시다시피PostgreSQL-CE PGCES-02인증시험은 업계여서도 아주 큰 비중을 차지할만큼 큰 시험입니다. 하지만 문제는 어덯게 이 시험을 패스할것이냐이죠.PostgreSQL-CE PGCES-02인증시험패스하기는 너무 힘들기 때문입니다. 다른사이트에 있는 자료들도 솔직히 모두 정확성이 떨어지는건 사실입니다. 하지만 우리ITExamDump의 문제와 답은 IT인증시험준비중인 모든분들한테 필요한 자료를 제공할수 있습니디. 그리고 중요한건 우리의 문제와 답으로 여러분은 한번에 시험을 패스하실수 있습니다.

PostgreSQL-CE인증PGCES-02시험은 현재 치열한 IT경쟁 속에서 열기는 더욱더 뜨겁습니다. 응시자들도 더욱더 많습니다. 하지만 난이도난 전혀 낮아지지 않고 이지도 어려운 시험입니다. 어쨌든 개인적인 지식 장악도 나 정보기술 등을 테스트하는 시험입니다. 보통은PostgreSQL-CE인증PGCES-02시험을 넘기 위해서는 많은 시간과 신경이 필요합니다.

ITExamDump의PostgreSQL-CE인증 PGCES-02시험덤프 공부가이드는 시장에서 가장 최신버전이자 최고의 품질을 지닌 시험공부자료입니다.IT업계에 종사중이라면 IT자격증취득을 승진이나 연봉협상의 수단으로 간주하고 자격증취득을 공을 들여야 합니다.회사다니면서 공부까지 하려면 몸이 힘들어 스트레스가 많이 쌓인다는것을 헤아려주는ITExamDump가 IT인증자격증에 도전하는데 성공하도록PostgreSQL-CE인증 PGCES-02시험대비덤프를 제공해드립니다.

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

NO.1 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-CE   PGCES-02   PGCES-02최신덤프

NO.2 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-CE인증   PGCES-02   PGCES-02자격증   PGCES-02최신덤프

NO.3 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   PGCES-02   PGCES-02 dump   PGCES-02

NO.4 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-02   PGCES-02   PGCES-02   PGCES-02 pdf

NO.5 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-CE   PGCES-02   PGCES-02   PGCES-02

NO.6 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   PGCES-02자료   PGCES-02

NO.7 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-CE   PGCES-02 dump   PGCES-02 dumps   PGCES-02

NO.8 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-02기출문제   PGCES-02   PGCES-02

NO.9 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

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NO.10 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

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NO.11 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-CE시험문제   PGCES-02   PGCES-02   PGCES-02덤프

NO.12 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 pdf   PGCES-02   PGCES-02   PGCES-02최신덤프   PGCES-02   PGCES-02

NO.13 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   PGCES-02   PGCES-02시험문제   PGCES-02덤프   PGCES-02덤프

NO.14 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   PGCES-02 dump   PGCES-02

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-02인증   PGCES-02   PGCES-02   PGCES-02덤프

NO.16 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-CE   PGCES-02   PGCES-02

NO.17 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-CE   PGCES-02   PGCES-02   PGCES-02

NO.18 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-CE   PGCES-02자료   PGCES-02   PGCES-02   PGCES-02

NO.19 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

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NO.20 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-CE자격증   PGCES-02   PGCES-02인증   PGCES-02자료

NO.21 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-CE최신덤프   PGCES-02최신덤프   PGCES-02   PGCES-02덤프

NO.22 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

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NO.23 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-CE   PGCES-02인증   PGCES-02

NO.24 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

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NO.25 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-CE자료   PGCES-02자격증   PGCES-02

NO.26 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

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NO.27 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   PGCES-02기출문제   PGCES-02덤프   PGCES-02   PGCES-02   PGCES-02

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

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NO.29 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-02 dump

NO.30 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-CE자료   PGCES-02기출문제   PGCES-02최신덤프   PGCES-02자격증

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