The following interface is displayed when configuring a Map Item attribute:

A Map item attribute allows you to access data within an element contained within a map value and indexed via a key.
A Map item attribute has the following specific properties:
•Map Column: a mandatory database column, which contains the map data.
•Key Value: a mandatory key, which is used to access a specific element within the map data. Key value can be a maximum of length 100 characters in length.
•Data Type
Map Item attributes can reference data persisted as JSON. This feature is supported at the following database platforms:
•AWS Redshift
•Amazon Aurora (v5.7.x)
•Azure PostgreSQL
•Azure Database MySQL
•Azure SQL Database
•Cassandra (Compare to List criteria not supported)
•DB2
•MySQL
•MariaDB
•Oracle (v12.x)
•PostgreSQL
•Snowflake
•SQL Server (2016+ only)
•Teradata (v15)
•Vertica