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The <header> is the first CRC element within an i2b2 <message_body>. This section defines the elements shown below in the example header.
<crc:header>
<user login=""></user>
<data_source></data_source>
<patient_set_limit>0</patient_set_limit>
<estimated_time>0</estimated_time>
<create_date>2002-12-23T00:00:00</create_date>
<submit_date>2002-12-23T00:00:00</submit_date>
<complete_date>2002-12-23T00:00:00</complete_date>
<request_type>getPDO_fromObservationFact</request_type>
</crc:header>

Element Name

Description

header

The container for generic information useful for any CRC message

user

User information used for authentication and login

data_source

Information about the source of the data

patient_set_limit

Limit the size of the patient set returned in a query

estimated_time

The time estimated for the query to be completed.

create_date

The date the query was created.

submit_date

The data the query was submitted to be executed or run.

complete_date

The date a query finished executing.

request_type

A code that tells the service what type of request to expect, which tells it what kind of xml to expect in the rest of the message.



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