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Editorial Team
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Asked: 2026-05-15T12:24:40+00:00

I’m curious what the difference between the token Trusted_Connection and Integrated Security in SQL

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I’m curious what the difference between the token “Trusted_Connection” and “Integrated Security” in SQL Server connection strings (I believe other databases/drivers don’t support these). I understand that they are equivilent.

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1 Answer

  1. Editorial Team

    They are synonyms for each other and can be used interchangeably.

    In .Net, there is a class called SqlConnectionStringBuilder that is very useful for dealing with SQL Server connection strings using type-safe properties to build up parts of the string. This class keeps an internal list of synonyms so it can map from one value to another: 

    +----------------------+-------------------------+
| Value                | Synonym                 |
+----------------------+-------------------------+
| app                  | application name        |
| async                | asynchronous processing |
| extended properties  | attachdbfilename        |
| initial file name    | attachdbfilename        |
| connection timeout   | connect timeout         |
| timeout              | connect timeout         |
| language             | current language        |
| addr                 | data source             |
| address              | data source             |
| network address      | data source             |
| server               | data source             |
| database             | initial catalog         |
| trusted_connection   | integrated security     |
| connection lifetime  | load balance timeout    |
| net                  | network library         |
| network              | network library         |
| pwd                  | password                |
| persistsecurityinfo  | persist security info   |
| uid                  | user id                 |
| user                 | user id                 |
| wsid                 | workstation id          |
+----------------------+-------------------------+

    (Compiled with help from Reflector)

    There are other similar classes for dealing with ODBC and OleDb connection strings, but unfortunately nothing for other database vendors – I would assume the onus is on a vendor’s library to provide such an implementation.

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