What is a select operation, Database Management System

Assignment Help:

What is a SELECT operation?

The select operation selects tuples that please a given predicate. We use the lowercase letter σ to denote selection.

 


Related Discussions:- What is a select operation

What is assertion, What is assertion? Mention the forms available. An a...

What is assertion? Mention the forms available. An assertion is a predicate expressing a condition that we wish the database always to satisfy. Domain integrity constraints.

Database system design and Implementation, Consider a typical sales invoice...

Consider a typical sales invoice that would include the following information. Design a single table to hold all of the information required to store an invoice including this info

Define aggregate functions, Define Aggregate functions and what aggregate f...

Define Aggregate functions and what aggregate functions supported by the MySQL To calculate a summary value from a set of individual values and uses one of the functions known

Estimate the transaction states, Suppose an instruction takes 1 nanosecond ...

Suppose an instruction takes 1 nanosecond to execute (on average), a page fault takes 20 microseconds of processor time, and it takes 300 microseconds of disk time to read or write

State the definition of association, State the definition of association ...

State the definition of association An association is a structural relationship which specifies that objects of one thing are connected with objects of another. In UML, asso

What is a primary index, What is a primary index? A primary index is an...

What is a primary index? A primary index is an index whose search key also explains the sequential order of the file.

Weak entity, An example of a weak entity is Staff because the availabilityI...

An example of a weak entity is Staff because the availabilityID cannot be uniquely identified unless it is used in conjunction with the foreign key known as availabilityID in the A

Write short notes on index structure of files, WRITE SHORT NOTES ON INDEX S...

WRITE SHORT NOTES ON INDEX STRUCTURE OF FILES? There are two basic parts of indices 1.   Ordered indices 2.   Hash indices Every technique must be evaluated on the bas

Bid Cunt, How do I use strap on?#

How do I use strap on?#

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd