Download RDBMS quest bank - E

Unit 1
Section A (Multiple Choice question)
1. A ______ is an organized collection of data
(1) database (2) DBMS (3) Management System
2. A ______ is a collection of programs which provide management of databases
(1) DBMS (2) RDBMS (3) DATA BASE
3. DBMS provides data ______
(1) integrity (2) security (3) accuracy
4. A relational database consists of a collection of
(1) tables (2) fields (3) records
5. A ________ in a table represents a relationship among a set of values.
(1) field (2) row (3) column
6. The term _______ is used to refer to a row.
(1) tuple (2) attribute (3) field
7. The term attribute refers to a ___________ of a table
(1) record (2) column (3) row
8. The tuples of the relations can be of ________ order
(1) same (2) sorted (3) any
9. The different classes of relations created by the technique for preventing modification
anomalies are called:
(1) normalization (2) functional dependencies (3) referential integrity constraints
10. A relation is in this form if it is in BCNF and has no multivalued dependencies
(1) first (2) third (3) fourth
11. Row is synonymous with the term
(1) Record (2) Field (3) Column
12. The primary key is selected from the
(1) composite keys (2) candidate keys (3) foreign keys
13. Which of the following is a group of one or more attributes that uniquely identifies a row?
(1) key (2) tuple (3) relation
14. A key:
(1) must always be composed of two or more columns (2) can only be one column (3) identifies
a row.
15. An attribute is a(n)
(1) column of a table (2) two dimensional table (3) row of a table
16. ______is a powerful relational database management syst
(1) Oracle (2) Sybase (3) MSAccess
17. A database connection,a ______ and its client software communicate with each other
(1) database (2) user (3) database server
18. The data in RDBMS is stored in database objects called ____
(1) tables (2) relations (3) database
19. Constraints are the ____ enforced on data columns on table
(1) procedures (2) rules (3) policies
20. Constraints could be column level or ____
(1) row level (2) table level (3) field level
21. _________ constraint ensures that all values in a column are different
(1) NOT NULL (2) DEFAULT (3) UNIQUE
22. Which is the Standard language for querying and manipulating data?
(1) Structured Query Language (2) Standard Query Language (3) Procedural Language
23. DDL Stands for
(1) Data Deriving Language (2) Data Declaration Language (3) Data Definition Language
24. Insert/delete/modify rows in tables is accomplished by
(1) Data Definition Language (2) Data Manipulation Language (3) Data Transmission Language
25. _____ command modifies one or more attributes in a table
(1) INSERT (2) MODIFY (3) UPDATE
Section B (5 Marks Questions)
1.
2.
3.
4.
5.
What is the difference between DBMS & RDBMS?
Explain the Data types in ORCALE.
Define RDBMS.
What is mean by primary key & foreign key?
What is mean by key?
Section C (8 Mark Questions)
1. What is normalization & explain its types.
2. Write a brief note on DDL.
3. Explain about types of keys.
Unit II
Section A (Multiple Choice question)
1. ________ command in SQL is used to create a new table
(1) CREATE (2) NEW (3) ALTER
2. _________________ is used to modify the records in the database
(1) Data Transmission Language (2) Data Definition Language (3) Data Manipulation Language
3. The ______________ statement is used to add new records (rows) in a table
(1) INSERT (2) ADD (3) INSERT ROW
4. The ___________ clause contains the name of the table where the record needs to be inserted
(1) INTO (2) UPTO (3) INSERT
5. The ______________ statement is used to remove specific rows in a table with conditions
(1) REMOVE (2) DELETE (3) CLEAR
6. The command to remove rows from a table 'CUSTOMER' is:
(1) REMOVE FROM CUSTOMER ... (2) DROP FROM CUSTOMER ... (3) DELETE FROM
CUSTOMER WHERE ...
7. The SQL WHERE clause:
(1) limits the column data that are returned. (2) limits the row data are returned. (3) Both A and
B are correct.
8. Which of the following is the original purpose of SQL?
(1) To specify the syntax and semantics of SQL data definition language (2) To specify the
syntax and semantics of SQL manipulation language (3) Both A and B
9. SQL data definition commands make up a(n) ________ .
(1) DDL (2) DML (3) TCL
10. We must specify the ___________ for storing the data
(1) data type (2) data name (3) table space
11. _______ datatype is used when a fixed length character string is required
(1) CHAR (2) VARCHAR2 (3) LONG
12. _______ datatype is used when a variable length character string is required
(1) CHAR (2) VARCHAR2 (3) LONG
13. _________ statements that specify and modify database schemas.
(1) data definition language (DDL) (2) data manipulation language (DML), (3) Data Control
Language(DCL)
14. The most commonly used SQL command is ______ statement
(1) SELECT (2) UPDATE (3) INSERT
15. To select all fields from one table ___ symbol is used with SELECT Statement
(1) * (2) + (3) #
16. To view the structure of a table ______ command is used
(1) DESC (2) DESCRIBE (3) DES
17. The __________ command is used to make all transaction changes permanent to the data
base
(1) Roll back (2) Commit (3) Save point
18. A __________ is a virtual table, through which a selective portion of the data from one or
more tables can be seen
(1) VIEW (2) SEQUENCE (3) TABLES
19. A view is stored as a ________statement in the database
(1) SELECT (2) INSERT (3) UPDATE
20. The ________ option allows a view to be created even if a base table that the view references
does not exist
(1) NO FORCE (2) FORCE (3) REPLACE
21. If the DBA omits the _______ clause, Oracle will automatically assign the constraint
(1) CONSTRAINT (2) NOT-NULL CONSTRAINT (3) PRIMARY KEY
22. A_________ is an alias, that is, a form of shorthand used to simplify the task of referencing a
database object
(1) view (2) synonym (3) structures
23. A _______ synonym can be accessed by any system user
(1) private (2) public (3) both a and b
24. Oracle provides the capability to generate sequences of unique numbers are called
__________
(1) views (2) synonyms (3) sequences
25. The RENAME SYNONYM command only works for ______ synonyms
(1) private (2) public (3) sequential
Section B (5 Marks Questions)
1.
2.
3.
4.
5.
How will you alter a table? Explain with example.
Write a note on column constrains.
Explain commit & save statement.
Write a query for inserting & deleting data in a table.
Explain about table
Section C (8 Mark Questions)
1. Write a brief note on data manipulation language.
2. Explain about transaction control statements.
3. What is mean by constrains and explain its types.
Unit III
Section A (Multiple Choice question)
1. The _____ function is used to search a character string for a character substring
(1) SUBSTR (2) INSTR (3) INSTRING
2
LENGTH() returns the length of a string in ___
(1) bytes (2) bits (3) characters
3
______ string function removes leading spaces
(1) RTRIM() (2) LTRIM() (3) TRIM()
4
________returns the numeric value of the leftmost character of the string str
(1) BYTE() (2) ASCII(char) (3) ASCII(str)
5
_________ returns number of characters in argument
(1) CHAR_LENGTH() (2) CHAR() (3) CHARACTER_LENGTH()
6
____ returns the current date as a value in 'YYYY-MM-DD' or YYYYMMDD format
(1) DATE() (2) CURDATE() (3) CURRENTDATE()
7
CURTIME() returns the current time as a value in ________ format
(1) HH:MM:SS (2) MM:HH:SS (3) HH:MM:SS
8
_______ returns the year for date, in the range 1000 to 9999
(1) YEAR(dte) (2) YEAR(date) (3) YEAR()
9
_______ returns the time between two dates
(1) DATEDIFF() (2) DATEDIFFERENCE() (3) DATEBETWEEN()
10
______ returns the current date and time as a value in 'YYYY-MM-DD HH:MM:SS'
(1) NOW() (2) CURR() (3) CURTIME()
11
___________ accept numeric input and return numeric values
(1) number functions (2) alphanumeric functions (3) character functions
12
What is the output of following query SELECT ROUND(23.124586,4) FROM DUAL;
(1) 23.1245 (2) 23.13458 (3) 23.124586
13
Write the output for the following query SELECT MOD(13,3) FROM DUAL;
(1) 2 (2) 1 (3) 3
14
_______ number function retrurns the absolute value of n
(1) ABSOLUTE(n) (2) ABS(n) (3) ABSOL(n)
15
Write the output of the following query SELECT CEIL(134.78) FROM DUAL;
(1) 135 (2) 134.78 (3) 134.8
16
____________ is used to prevent invalid data entry to the database
(1) integrity constraints (2) security constraints (3) entity constraints
17
Entity integrity constraints are used to enforce ____ in the database
(1) integrity (2) consistency (3) security
18
To enforce an integrity rule based os a logical or boolean expression,we can use
_________constraint
(1) not null (2) primary (3) check
19
The NOT null costraint can be given only at ________ level
(1) row (2) column (3) table
20
________ key is used to identify each row in the table uniquely
(1) foreign (2) primary (3) composite
21
An _____ is a pointer to data in a table
(1) integrity (2) index (3) table
22
A _____ index does not allow any duplicate values to be inserted into the table
(1) not null (2) check (3) unique
23
A __________ index is an index on two or more columns of a table
(1) composite (2) unique (3) implicit
24
Indexes are automatically created for _______ key constraints and unique constraints
(1) primary (2) foreign (3) secondary
25
Indexes should not be used on columns that contain a high number of ___ values
(1) NUMERIC (2) ALPHANUMERIC (3) NULL
Section B (5 Marks Questions)
1.
2.
3.
4.
5.
Write about single row function.
Explain any five numeric functions with example
What is mean by group function?
What is the use of having clause?
Write a short note on conversion function
Section C (8 Mark Questions)
1. Explain in details about built-in-functions
2. What it is mean by grouping data? Explain with example
3. Write in details about nesting group function
Unit IV
Section A (Multiple choice Question)
1. _________ functions operate on groups of rows and return one value for the entire group
(1) Group (2) number (3) date
2
_______ function returns the number of rows in the table
(1) NUMBER() (2) COUNT() (3) CNT()
3
A _________ operation retrieves columns from two or more tables
(1) join (2) inner join (3) outer join
4
_________type of join is used when a table has a foreign key that references its own
primary key
(1) equi join (2) self-join (3) outer-join
5
An SQL join clause combines records from two or more _____ in a database
(1) databases (2) queries (3) tables
6
A table (base table, view, or joined table) can JOIN to itself is a __________
(1) self-join (2) outer-join (3) equi-join
7
In SQL, a ____ is a virtual table based on the result-set of an SQL statement
(1) sequences (2) view (3) synonyms
8
The fields in a view are fields from one or more real______ in the database.
(1) tables (2) databases (3) queries
9
The ____ option allows a view to be created even if a base table that the view references
does not already exist
(1) FORCE (2) NO FORCE (3) OR REPLACE
10
The ____ option allows creation of a view that is read-only
(1) READ-ONLY (2) READ (3) WITH READ ONLY
11
A _____ is an alias, that is, a form of shorthand used to simplify the task of referencing a
database object
(1) Synonyms (2) sequences (3) views
12
A_________ synonym can be accessed by any system user
(1) private (2) public (3) user
13
To create synonyms, you will need to have the ________ privilege
(1) SYNONYM (2) UPDATE SYNONYM (3) CREATE SYNONYM
14
The RENAME SYNONYM command only works for _________ synonyms
(1) private (2) public (3) none of the above
15
_____ synonyms can be renamed with the RENAME SYNONYM command
(1) public (2) private (3) user
16
In Oracle,sequences of unique numbers are called ________
(1) sysnonyms (2) views (3) seqences
17
A sequence is a type of database ______
(1) view (2) object (3) value
18
The sequence of numbers can be generated in either __________ order
(1) ascending (2) descending (3) ascending or descending
19
Sequence values are generated through the use of two ________
(1) database objects (2) pseudocolumns (3) pseudorows
20
In the case of a descending sequence, the MAXVALUE should be _____ than the
MINVALUE
(1) greater (2) less (3) equal
21
The clause in view allows rows that can be selected through the view to be
_______________updated
(1) WITH READ ONLY OPTION (2) WITH CONSTRAINT (3) WITH CHECK OPTION
22
There are _____________ types of synonyms available
(1) 3 (2) 2 (3) 1
23
views, indexes, and synonyms, a sequence is a type of database __________
(1) tablespaces (2) table (3) object
24
When data from more than one table in the database is required ________ a condition is
used
(1) join (2) insert (3) add
25
A foreign key constraint also known as ___________ integrity contraint
(1) referential (2) address (3) composite
Section B (Five Mark Question)
1.
2.
3.
4.
5.
List out the set operators in Oracle
How to alter an existing View?
Define table indexes.
How the drop the sequence that created?
Mention the uses of the View & Sequence
Section c (Eight mark question)
1. What is mean by joins? Explain its types.
2. Write a brief note on Views.
3. Explain in detail about table indexes
Unit V
Section A (Multiple choice question)
1. PL/SQL Stands for ___________ Language/SQL
(1) Procedural (2) Programming (3) Practical
2
PL/SQL Supports the declaration and ____ of object types
(1) definition (2) manipulation (3) conclusion
3
Applicaitons written in PL/SQL are ______ to any OS
(1) applicable (2) adoptable (3) portable
4
A PL/SQL block can be divided into __________ parts
(1) 1 (2) 2 (3) 3
5
In PL/SQL procedursl statements are included between the ____________ statements
(1) BEGIN and END (2) START and END (3) START and EXIT
6
In PL/SQL, ________ are used to name objects
(1) literals (2) constants (3) identifiers
7
An identifier must begin with ________
(1) alphabet (2) symbol (3) comments
8
________ is an explicitly specified number,character,string or boolean value
(1) identifiers (2) literals (3) constants
9
___________ statements are the non-executable statements
(1) delimiters (2) symbols (3) comments
10
LOB stands for ___________ data
(1) Least Object Data (2) Long Object Data (3) Large Object
11
Which of the following datatype is used for character objects?
(1) BLOB (2) CLOB (3) BFILE
12
A _________ is a sub program that performs a specifies action
(1) Functions (2) Packages (3) Procedures
13
A ___________ is a handle or pointer to the context area
(1) cursor (2) procedure (3) object
14
A ________ is a database object that groups logically related PL/SQL objects
(1) Procedure (2) Function (3) Packages
15
___________ cursor's select statements are known ar compile time
(1) implicit (2) static (3) dynamic
16
____________ named as PL/SQL blocks that can accept parameters
(1) sub programs (2) sub procedures (3) sub modules
17
__________ is a stored procedure that is fixed, when an insert,update or delete statement
is issued
(1) packages (2) triggers (3) functions
18
The trigger statements specify the _______ statements
(1) DDL (2) DML (3) TCL
19
By default,triggers are ______
(1) enabled (2) disabled (3) created
20
PL/SQL variables are declared in the ________ part of a PL/SQL block
(1) executable (2) declarative (3) accessible
21
The function specification begins with the keyword _____
(1) fun (2) function (3) begin function
22
A _________ item can be accessed from any program and Pl/SQL block
(1) private (2) public (3) new
23
A trigger can be disabled using the _________ trigger statement
(1) alter (2) disable (3) insert
24
A trigger can be dropped from the database using ______ command
(1) delete (2) drop (3) alter
25
The Trigger ________ is an optional part
(1) statement (2) body (3) restriction
Section B (Five Mark Question)
1.
2.
3.
4.
5.
What is mean by reserved words?
What are conditions to define user defined identifier?
Define stored procedures.
List out the uses of triggers.
Write a short note functions
Section C (Eight Mark Questions)
1. What is block structure? Explain in details.
2. Write a brief note about cursors and explain its types
3. Explain in detail about triggers