In OCLC, there are saved templates for entering fields and information into a bibliographic record. Constant data can be created for any element of a MARC record, including fixed and variable fields. Constant data is used to streamline the data entry process and it is especially useful when you need to create a record for original cataloging but, it is also great for creating individual fields, for example, 590 notes for regular gift collection materials or 949s to create item records in Sierra.
To apply constant data to a record in OCLC:
Edit ----->Constant Data----->Local----->Apply Default, by Name, or from List
OR
2. Key Ctrl + Y or Ctrl + B – to apply by default or name
Ex. Applying Constant Data by Name
Ex. Applying Constant Data from List
When this pop-up appears you can type in the name of the constant data template you want to use or you can click OK to bring up a list of all constant data options
Fixed vs. Variable MARC Fields to Apply
When copy cataloging, constant data should be applied to the Variable fields and NOT the fixed fields
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