MIL-STD-498 (Military-Standard-498) was a United States military standard whose purpose was to "establish uniform requirements for software development and documentation." It was released Nov. 8, 1994, and replaced DOD-STD-2167A, DOD-STD-7935A, and DOD-STD-1703. It was meant as an interim standard, to be in effect for about two years until a commercial standard was developed.
it was cancelled on May 27, 1998 and replaced by J-STD-016 and IEEE 12207.
A key component of the standard is 22 Data Item Descriptions (DIDs). Each DID generically describes the required content of a data item, a "document" that describes the software or some aspect of the software life-cycle. These documents could take many forms, from source code, to installation scripts, to various electronic and paper reports, and the contracting party (e.g., the government) is encouraged to specify acceptable formats. The set of data item descriptions, once tailored for a specific contract, then become Contract Data Requirement List items ("CDRLs") that represent the deliverable items of a contract. Depending on the nature of the project, not all data items may be required.