<div>
-- User Databases<br />
Select * <br />
From sys.databases <br />
Where database_id &gt;&nbsp;5<br />
<br />
--System Databases<br />
Select * <br />
From sys.databases <br />
Where database_id &lt;= 5
</div>


-- User Databases
Select *
From sys.databases
Where database_id > 5

--System Databases
Select *
From sys.databases
Where database_id <= 5

<div>
is 1-4 id fixed for system dbs in all versions of sql server. What is the role of sid field
</div>


is 1-4 id fixed for system dbs in all versions of sql server. What is the role of sid field

<div>
SID is a system-level identification number.<br />
<br />
when an object is created it is assigned an id - SID, that number identifies the object as a securable within SQL Server and then the object is deleted, the id is recycled.
</div>


SID is a system-level identification number.

when an object is created it is assigned an id - SID, that number identifies the object as a securable within SQL Server and then the object is deleted, the id is recycled.

<div>
you can also use<br />
<br />

<pre><code id="code-20-38814308-1">SELECT * FROM sys.databases
WHERE owner_sid != 1</code></pre>
</div>


you can also use



SELECT * FROM sys.databases
WHERE owner_sid != 1

<div>
so what is good practice using sid to identify db or using id what BCUNNEY has suggested
</div>


so what is good practice using sid to identify db or using id what BCUNNEY has suggested

<div>
I think it would be fair to split the points with BCUNNEY
</div>


I think it would be fair to split the points with BCUNNEY

<div>
<div class="content wysiwyg-content">
Hi <br />
<br />
I am using following query to get the list of db<br />
<br />
select * from sys.databases (or select * from sysdatabases)<br />
<br />
My question is how can we know that which db is system database and which one is user created?<br />
<br />
Regards<br />
Karan Gupta
</div>
</div>


Hi 

I am using following query to get the list of db

select * from sys.databases (or select * from sysdatabases)

My question is how can we know that which db is system database and which one is user created?

Regards
Karan Gupta

System databases Vs User created databases

Microsoft SQL Server 2008 is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning. Major improvements include the  Always On technologies and support for unstructured data types.

Microsoft SQL Server 2008

Microsoft SQL Server 2005 is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning. It includes support for managing XML data and allows a database server to be exposed over web services using Tabular Data Stream (TDS) packets encapsulated within SOAP (protocol) requests.

Microsoft SQL Server 2005

Microsoft SQL Server is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.SQL Server is available in multiple versions, typically identified by release year, and versions are subdivided into editions to distinguish between product functionality. Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning.