Oracle Test1 assesses knowledge on SQL commands and Oracle database management. It covers table creation, data types, and table manipulation, focusing on syntax accuracy and command effects, enhancing database handling skills.
4
2
5
4,5
2,5
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No error will be returned.
Yes. The table name TEST is invalid.
Yes. All columns but the date column must have declared sizes.
Yes. The length of the VARCHAR2 variable must be defined.
Yes. The CHAR column must have a declared size.
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TRUNCATE TABLE TEST;
DELETE FROM TEST WHERE ID = 1;
TRUNCATE TABLE TEST WHERE ID = 1;
REMOVE TABLE TEST;
DELETE FROM TEST;
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INSERT
CREATE TABLE
CREATE SYNONYM
MERGE
TRUNCATE
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NUMBER(10,2)
NUMBER(4,5)
FLOAT(122,2)
DATE(8)
CHAR(2500)
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NUMBER
FLOAT
NUMBER(3,2)
NUMBER(2,3)
None of the above
DML commands execute an implicit rollback.
DML commands require an explicit COMMIT to be rolled back.
DDL commands can be undone.
DDL commands change data in tables.
None of the above.
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. NUMBER and FLOAT can be a maximum of 38 bytes.
The DATE datatype stores date values with a timestamp
CHAR and VARCHAR2 default to 1 byte if no length is defined.
Both VARCHAR2 and CHAR can exceed 2,000 bytes.
VARCHAR2 can be a maximum size of 4,000 bytes; CHAR, 2,000 bytes
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INSERT INTO TEST(ID) VALUES(1);
INSERT INTO TEST VALUES(2, 'This is a string');
INSERT INTO TEST(ID, STR) VALUES(3, 'This is another string');
INSERT INTO TEST(STR) VALUES('This is another string still');
INSERT INTO TEST(ID) VALUES('This is yet another string');
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INSERT INTO TEST VALUES(10000.234);
INSERT INTO TEST VALUES(1000.2345);
INSERT INTO TEST VALUES(10000.2345);
INSERT INTO TEST VALUES(100000.2345);
INSERT INTO TEST VALUES(100000.24);
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You cannot roll back this statement.
All pending transactions are committed
All views based on the DEPT table are deleted
All data in the table is deleted, and the table structure is also deleted
All data in the table is deleted, but the structure of the table is retained.
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Quiz Review Timeline (Updated): Mar 21, 2023 +
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