TADB Identifier Restrictions

The following identifiers are allowed in any order with restrictions.

A-Z, a-z, 0-9, _ and <space>

Identifier exceptions are:

An identifier may not begin or end with a space.

Example

Valid

A<space>A

Not Valid

<space>A and A<space>

 

A space cannot be followed by another space in identifier names.

Example

Valid

A<space>A

Not Valid

A<space><space>A

An identifier may not be all numbers.

Example

"4x"

Valid

"4<space>_"

Not Valid

"4"

 Reserved identifiers are

Identifier

Reserved by the Query Engine syntax to reference:

"Trk"

Tracker Standard, Extended, and System attributes.

"TADB"

TADB System attributes (e.g. id, refid).

More information

 TADB overview.