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What are Metadata, Master data, and Transaction data?
Meta Data: Meta Data represents data about Data. It provides information about the structure of data, database table objects, etc. For example, ABAP Dictionary will provide information about the data within RDBMS.
Master Data: Master Data is comprised of whatever an organization does and how it is differently defined over business units or competitors. It helps to establish a 360-degree business view.
It consists of key business information such as Customer information, Materials, Employee, etc. This is similar to reference data. For example, if a customer orders 5 units of your product, rather than 5 times asking the customer for shipping address, it can be referenced from the Customer Master Data.
Transaction Data: Transaction data consists of data related to day-to-day transactions. For example, the daily production details related to material, getting of materials, daily transactions, etc.