Analysis of information sources in references of the Wikipedia article "ADABAS" in English language version.
Adaptable Data Base System, or ADABAS, was developed by Software AG of Darmstadt, West Germany. Its first version appeared in 1971, and by now it has over 80 installations in Europe and the United States.
Historically, the solution was to use nonrelational structures, such as the inverted structure used by Adabas ...
COSTS: "So far its been 2 years and 30 million dollars to convert." _versus_ BENEFITS: (but) "a single SQL statement (with joins) to replace pages of code.
ADABAS was ... one of the three major inverted-list DBMS, the other two being Computer Corporation of America's Model 204 and ADR's Datacom/DB.
... including the conversion of any applications written in 4th Generation languages (4GL) to more contemporary languages, and the adaptation of any applications in standard programming languages to directly access the new relational database. Included in that coverage is Adabas and Natural from Software AG ...