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16 questions
Newest Active Bountied Unanswered
3 votes
1 answer
362 views

I have found and tested that the System/1, System/23, System/34, System/36 (all versions) and Displaywriter all use the same floppy format, from which I have found information at some ECMA documents. ...
Borg Drone's user avatar
  • 2,298
4 votes
1 answer
559 views

An old (late 1970s) DBM library I'm reverse-engineering has the following page structure (genericized): Contents Comment Page ID DB name + page number in the DB Usage Extent count in the pageThe last ...
Leo B.'s user avatar
  • 22.3k
1 vote
1 answer
297 views

Per Wikipedia, In computing, a DBM is a library and file format providing fast, single-keyed access to data. ... The original dbm library and file format was a simple database engine, originally ...
Leo B.'s user avatar
  • 22.3k
3 votes
2 answers
316 views

Around 1988-1990 I worked for a company that was using an old RSX-11M system to host an ERP (Enterprise Resource Planning) application. The application used a third-party database product of which I ...
Anthony X's user avatar
  • 501
3 votes
1 answer
264 views

I think I might have a false-memory, but I remember reading about some big iron system (1970s to the 1980s, I suppose) that set database benchmark records because it delegated bulk OLTP DML and ...
Dai's user avatar
  • 833
0 votes
0 answers
134 views

I'm reading about the history of the HP 21xx series in this interview, and one thing has me confused. I never used these machines, so I can't be sure I have the context correct... On page 5 he's ...
Maury Markowitz's user avatar
  • 22.4k
6 votes
1 answer
357 views

Near 21-22 years ago I worked in a COBOL-based shop. This business had one LOB application written in RM/COBOL-85, and deployed it to multiple customers with different network types (Xenix with dumb ...
mHouses's user avatar
  • 163
9 votes
1 answer
525 views

In some old video on YouTube a few years ago, I noticed a curious computer from the end of the 70s - early 80s. In the rack (half height), typical of minicomputers of those years, there was a 14" ...
Wheelmagister's user avatar
  • 2,311
8 votes
1 answer
255 views

I'm putting together an article on TPC-C, and while chasing down leads its primary author mentioned the RdbStar project at DEC. As he described it, the manager of DEC's storage department (Jim Grey? ...
Maury Markowitz's user avatar
  • 22.4k
16 votes
2 answers
1k views

The Vulcan DBMS for CP/M micros was originally developed in 8080 assembly language by a contractor working for Jet Propulsion Lab, based on an earlier JPL mainframe program. This code went on to be ...
Brian H's user avatar
  • 62.2k
2 votes
1 answer
258 views

I have a copy of the book, DESIGN: a program to create data entry programs by J. Michael Wuerth. Does anyone know where I can obtain a copy of the accompanying software for the book?
Wes Robinson's user avatar
  • 21
6 votes
8 answers
796 views

Attribute–value pair is quite common in programming languages, databases, URL query-strings, and Email/HTTP headers, which could also be used to organize, classify and version files. Extended file ...
Schezuk's user avatar
  • 3,834
7 votes
1 answer
3k views

The Wave Race game for Nintendo 64 is called "Wave Race 64 - Kawasaki Jet Ski" in a ROM set. On Wikipedia, which I've previously considered authoritative for titles of commercial products, ...
Canine's user avatar
  • 87
1 vote
0 answers
190 views

A common technology stack for line of business applications in the sixties and seventies was IBM COBOL with the IMS database. I'm curious about how the combination handled record definitions. COBOL ...
rwallace's user avatar
  • 65.4k
6 votes
1 answer
251 views

The obvious way for a database to store data is with each record in a contiguous chunk, and each field having a fixed size and offset in the record. Joel Spolsky praises that way of doing things: ...
rwallace's user avatar
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