About Entities - trillium_discovery - trillium_quality - 17.2

Trillium Control Center

Product type
Software
Portfolio
Verify
Product family
Trillium
Product
Trillium > Trillium Discovery
Trillium > Trillium Quality
Version
17.2
Language
English
Product name
Trillium Quality and Discovery
Title
Trillium Control Center
First publish date
2008
Last updated
2024-07-01
Published on
2024-07-01T08:56:48.630530

An entity is a repository object that is analogous to a table or file stored in a physical data source. Entities contain attributes and rows that correspond to the data physically stored in a file or table. There are two types of entities: dynamic and real.

  • A dynamic entity is a table or file that resides in an external data source and is not imported into a repository. When you work with a dynamic entity, you are working directly with the physical data stored in a database, table or file.

The benefit of working with dynamic entities is that you are working with data that you know is current for the activity you are performing. Data auditing is fast and efficient, particularly when a single pass for business rule validation is required.

Note: Dynamic entities cannot be used in Time Series Analysis projects.
  • A real entity is a virtual copy of the physical data stored in an external data source and is created when you import data into a repository. When you create an entity by importing data to a repository, all data tasks reference a copy of your physical data. This is important to understand, because if your physical data changes, you must create a new entity to represent the most current data. You can also create an entity from a data source on your client system. without the need of a loader connection to the repository.
Note: To create HDFS entities (data sources) and profile HDFS data in your Hadoop environment, use the Discovery Center application, installed with the Trillium repository server software.