Skip to main content

About 'RESOURCE' Database in SQL Server 2005

1. 'Resource' Database is a new DB introduced in SQL Server 2005. Its shortly referred as 'RDB'.

2. Its an 'Hidden' and 'Read-only' DB.

3. You could find its 'mssqlsystemresource.mdf' file here -- C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data (If you have SQL Server 2005 installed in your box)

4. This is the database where all 'System objects' which belongs to 'Sys.' Schema physically reside. i.e., has definition of all System objects. These 'System objects' (like, sp_help) logically appear in every other DB in the server.

Schema -- It is similar to namespaces in .NET, it helps in logical grouping.
Sys -- Is newly created schema in SQL Server 2005. All System Objects resides here.

5. If you run this below script from any of your SQL Server 2005 database it would return 1741 rows. Those are 'definitions' of ALL the system objects which actually reside in RDB.

Select [name], object_definition(object_id) from sys.system_objects

6. This RDB makes 'Service Pack' upgades easy.

In SQL Server 2000 -- Lets assume a change happens to a system object. It would go and touch ALL database where this system object exists. Its bit tedious and risky. That was the reason, Service packs have a disclaimer urging us to backup our databases before we start the installation process :)

In SQL Server 2005 -- Since System Objects definitions is now stored only in Resource Database, Service Pack upgradation becomes quite simpler.

Technorati tags:

Comments

Popular posts from this blog

[Non Tech] Want to know the recipe for Omelette :)

Fed up with Bread - Jam and Curd Rice, today i wanted to eat Omelette. Interesting part is I wanted to cook it myself :) So in the first picture you see all the items which are needed for preparing an Omelette. When I had a closer look at the eggs I see that almost all the eggs are broken. But believe me when I bought it couple of days back it was in perfect condition! I was wondering whether the eggs have become rotten or pretty old to consume! I tried taking an egg and break it but couldn't break it at all :) Since I have kept in the freezer all the eggs have frozen and looked like a iron ball :) After trying for few minutes of trying i removed the shell of the egg and then kept that iron ball :) into a bowl and placed it within Oven. I heated it for 1 minute and checked. It melted only to a limit. So i just set it for another 2 minutes and checked it later. It has melted but the part of the egg white has become a Omelette :( I didn't leave it there. I took the bowl out of ...

Script table as - ALTER TO is greyed out - SQL SERVER

One of my office colleague recently asked me why we are not able to generate ALTER Table script from SSMS. If we right click on the table and choose "Script Table As"  ALTER To option would be disabled or Greyed out. Is it a bug? No it isn't a bug. ALTER To is there to be used for generating modified script of Stored Procedure, Functions, Views, Triggers etc., and NOT for Tables. For generating ALTER Table script there is an work around. Right click on the table, choose "Modify" and enter into the design mode. Make what ever changes you want to make and WITHOUT saving it right click anywhere on the top half of the window (above Column properties) and choose "Generate Change Script". Please be advised that SQL Server would drop actually create a new table with modifications, move the data from the old table into it and then drop the old table. Sounds simple but assume you have a very large table for which you want to do this! Then it woul...

My Wedding Anniversary :)

Six years back on the same day I married Sai Lakshmi (12-July-2000). I know Sai for almost 13 years now :) I fell in love with her during my 12th standard. I know @ 17 yrs any person wouldn't be matured enough to make a big decision like this. But thank God my choice was perfect :) Even now, very often we used to think about the past and laugh at our behaviors/actions then. My love story would be really interesting (at least for me and Sai :)) and I am sure none of you guys would be interested in reading about it so lemme not get into it in-depth. But one thing which I want to share is "Without Sai, I wouldn't have entered into the IT field at all". She was instrumental in convincing me to study my Master's degree in Computer Application. That's the move that changed my career. Till my schooling, my dream was to either become a "big" sportsman (Cricket and Badminton were my favorites at that time.) or an Aeronautics engineer. Unfortunately, my l...