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&gt;&gt;they are for &quot;add ins&quot; <br />
<br />
can you please explain what do you mean by add ins?
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>>they are for "add ins"

can you please explain what do you mean by add ins?

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so, it is coming from MS, they are like IT (Internal tables?)
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so, it is coming from MS, they are like IT (Internal tables?)

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<div class="content wysiwyg-content">
why are these 2 tables considered user defined?<br />
<br />
select distinct type from sys.objects where name in ('dtproperties','sysdiagra<wbr />ms')
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why are these 2 tables considered user defined?

select distinct type from sys.objects where name in ('dtproperties','sysdiagrams')

dtproperties,sysdiagrams

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.