Modular programming and data abstraction were already being used in programming.

In particular, it was designed to support separate compilation and data abstraction in a straightforward way.

The data independence and operation independence together gives the feature of data abstraction.

A yield statement is used to implement iterators over user-defined data abstractions.

Study selection and data abstraction was conducted independently by the two investigators.

Most rule engines supply the ability to develop a data abstraction that represents the business entities and relationships that rules should be written against.

Over the years, the developers have extensively rewritten the code in order to improve consistency and to follow modern programming conventions stressing data abstraction.

Paper 1 reported using two blinded raters for data abstraction, but the others did not mention blinding at this point.

Languages that implement data abstraction include Ada and Modula-2.

High-level assemblers also provide data abstractions normally found in high level languages.