This SQL & PL\/SQL quiz assesses knowledge on block-structured language specifics, executable sections, table security through views, handling of null values, DCL statements, and efficient data retrieval methods. It's tailored for learners aiming to enhance their database management skills.
DDL
DML
DCL
None of the above
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Declarative
Executable
Exeption handling
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NULL
0
Results in a compilation error
An exception will be raised
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Cursor CAPITALS is
Select CITY, STATE
Into my_city, my_state
From CITIES
Where CAPITAL = 'Y';
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TRUE
FALSE
Undefined
NULL
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Schema
Index
Views
Segments
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Column
1966_Invoices
Catch_#22
#Invoices
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Object oriented
Block structured
Object structured
All the above
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Declaration section
Command line
Executable section
Cannot assign at all
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True
False
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TO_CHAR
LOWER
LPAD
CEIL
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Primary key access
Access via unique index
Table access by ROWID
Full table scan
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When a SELECT statement returns no rows
When a SELECT statement returns more than one row
When the datatypes of SELECT clause and INTO clause do not match
When INTO statement is missing in the SELECT statement
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SELECT * FROM Persons WHERE LastName BETWEEN 'Hansen' AND 'Pettersen'
SELECT LastName>'Hansen' AND LastName'Hansen' AND LastName'Hansen' AND LastName'Hansen' AND LastName
SELECT * FROM Persons WHERE LastName>'Hansen' AND LastName
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Create or replace function vat (vat_rate IN NUMBER, price IN NUMBER)
Declare
L_vat NUMBER;
Begin
L_vat := (vat_rate/100) * price; return l_vat;
End;
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