Is sql server using trigger to capture change data in SQL server CDC?

hi all,
what is the Architecture of SQL server change data capture(CDC)? is sql server using trigger to capture change data in SQL server CDC? for example Change Data Capture (CDC) in SQL Server 2008 using we can capture change Data records INSERTs, UPDATEs, and
DELETEs applied to SQL Server tables.so my question is SQL server using triggers to capture change data like INSERT TRIGGER, UPDATE TRIGGER and DELETED TRIGGER using each tables after enabled CDC...?
Thanks
Tharindu Dhaneenja
Tharindu Dhaneenja http://dhaneenja.blogspot.com

It is not using triggers. The source is the transaction log.
Related link:
Basics of Change Data Capture
...The source of change data for change data capture is the SQL Server transaction log. As inserts, updates, and deletes are applied to tracked source tables, entries that describe those
changes are added to the log. The log serves as input to the change data capture capture process. This reads the log and adds information about changes to the tracked table’s associated change table. Functions are provided to enumerate
the changes that appear in the change tables over a specified range, returning the information in the form of a filtered result set. The filtered result set is typically used by an application process to update a representation of the source in some external
environment. ...
Kalman Toth, SQL Server & Business Intelligence Training; SQL Server 2008 Training

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Hi Ashish,
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Attachments:
Flow_chart_Pre-Post_trigger_during_Data_Acq.bmp ‏40 KB

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This account is no longer active. Contact ShadesOfGray for current posts and information.

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>
they are not oracle DBs anyway
>
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>
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