This page provides information on how to create Catalogs.
**DocDigitizer WorldObjects** lets you choose what information you want to work with, then the system retrieves the data from the appropriate systems without you knowing what the source systems are.
_A Catalog is the "data domain" of a particular object, where you can add or associate a list of values such as "list of countries."_
As mentioned, DocDigitizer WorldObjects offers varying ways to define Catalogs, one of which is called "Local Catalogs."
## Rules for Local Catalogs
The "Local Catalog" Catalog is structured like a CSV, where:
The first row is the Header, which must have as many columns as the number of object properties and their names
Column separator character can be either:
The escape character is "" (double quote)
The same rules that you use when creating CSV apply here.
## Local Catalogs—"in code"
The first step is to identify an Object that has reference data, like "Countries", "Gender", or "Zip Codes."
To demonstrate the creation of a Catalog we will use the object "Gender" created in the previous step (Gender).
## Requirements of a Catalog
Let’s assume that we needed to have a “Gender” entity, which will have the list of values of the different types of Gender:
M - Male
F - Female
X - Other
## Create Catalog Values
Open your VS Code and go to your workspace. Select object "Gender." Add the following data structure:
In the Developer Guide and Tutorials, you will find more information about Catalogs and how to use them. The next step is how to create the build.