Solved

Primary Key and Database Size

Posted on 2002-05-28
1
276 Views
Last Modified: 2006-11-17
Why does inclusion of a PK in each table of a database help to reduce the overall size of the database?

I had a trial database with lots of tables, one I put in PKs for every table, the size of the database shrank

Sanjay
0
Comment
Question by:kalrani
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 143

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 50 total points
ID: 7041088
If there is NO primary key, SQL Server will take internally the entire record columns to identify the rows, which does take of course much more space that a single column...

CHeers
0

Featured Post

Resolve Critical IT Incidents Fast

If your data, services or processes become compromised, your organization can suffer damage in just minutes and how fast you communicate during a major IT incident is everything. Learn how to immediately identify incidents & best practices to resolve them quickly and effectively.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Why is this different from all of the other step by step guides?  Because I make a living as a DBA and not as a writer and I lived through this experience. Defining the name: When I talk to people they say different names on this subject stuff l…
Load balancing is the method of dividing the total amount of work performed by one computer between two or more computers. Its aim is to get more work done in the same amount of time, ensuring that all the users get served faster.
Via a live example, show how to setup several different housekeeping processes for a SQL Server.
Viewers will learn how to use the SELECT statement in SQL to return specific rows and columns, with various degrees of sorting and limits in place.

738 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question