True or False: All CDTs mapped to a data store should have a primary key.

In the context of Appian and its use of Common Data Types (CDTs) with data stores, it's essential for each CDT to be mapped to a relational database table in a way that ensures data integrity. A primary key is a unique identifier for records in a database table and is a fundamental requirement of relational database design. The primary key serves several key purposes:

1. Uniqueness: It ensures that each record in the table is unique, which is critical for data retrieval, updates, and deletion. Without a primary key, there would be no reliable way to reference or manage specific records.

2. Relationships: Primary keys are used to establish relationships between different tables in a database. This is especially important in a relational model where entities need to interact with one another.

3. Indexing: Many database systems create an automatic index on the primary key, which can significantly improve the performance of queries that search for records.

Given these reasons, all CDTs intended to map to a data store should indeed have a primary key to maintain the integrity and efficiency of database operations. This foundational design principle reinforces proper data management and relationships within the context of an application. Therefore, having a primary key is a best practice and necessary