Re: [ vuZs.net ] CS403 Answer requested

 DML perform functions such as 
   Select correct option: 
   Insertion
   Deletion
   Creation of database
   All of above
 

Ref:

Performance considerations for DML statements

The database server performs additional actions if it detects any down-level version page during the execution of data manipulation language (DML) statements (INSERT, UPDATE, DELETE, SELECT). These actions can impact performance.

 "Select" and "project" are the examples of

Select correct option:

Unary operations

Binary operations

Ternary operations

All of above

REF:

The select, project, and rename operation are called unary operation because they operate on one relation.

Six basic operators:

·       Unary Operators

1)   Select    -  σ  (Sigma)

2)   Project   -  ∏ (PI)

3)    Rename -  ρ  (rho)

·       Binary Operators

1)    Union    -  U

2)    Set Difference - –

3)    Cartesian Product - X

________________

Mehreen Humayun

4th Semester, MBA(Banking)

Distance Learning Student

www.vuzs.net

Quality in Everything We Do

vuZs Banking Group: http://groups.google.com/group/vuzs_banking?hl=en

On Thu, Jun 16, 2011 at 8:20 AM, Zubair Hussain <zubair@vuzs.net> wrote:

 DML perform functions such as 
   Select correct option: 
    Insertion
    Deletion
    Creation of database
    All of above
   "Select" and "project" are the examples of 

 Select correct option: 

  Unary operations
    Binary operations
    Ternary operations
    All of above

Regards

Zubair Hussain

www.vuzs.net

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