1. The Apollo 13 spacecraft landed on the moon failed, and IBM computers played an important role in the rescue of astronauts.
2. IBM released the S/38 system, which integrates a database server based on SystemR as the prototype. To facilitate application porting, its API is consistent with the S/S/32 API.
3. IBM researcher Pat Selinger described the industry's first relational query optimizer in her paper "AccessPathSelectioninaRelationalDatabaseManagementSystem".
4. IBM extends DB2CommonServer to HP-UX and SunSolaris. DB2 began to support UNIX platforms developed by other companies.
5. IDUG (International DB2 User Organization) organization was established. This marks that DB2 users have formed a considerable scale.
6. DB2/400 is integrated in OS/400V1, and mechanisms such as parallel mechanisms, stored procedures and reference integrity are introduced.
7. The emergence of IBMPC marks the beginning of development of the PC industry. For a long time later, the words "IBMPCCompatible" marked on personal computers of various brands witnessed IBM's glory in this field.
8. This is an epoch-making year in database history. E.F.Codd, a researcher at IBM, published the industry's first paper on relational database theory "ARational Model Data for Large Shared Data Banks", and proposed the concept of relational models for the first time. This paper is one of the most important papers in the history of computer science and also established Dr. Codd's position as the "father of relational databases".
9. The paper "ImplentationofaStructured EnglishQueryLanguage" by IBM researchers Don Chamberlin and Morton Astrahan describes the first implementation solution of the SQL language based on SEQUEL. This is also one of the major achievements of the SystemR project.
10. Thanks to the invention of the relational database model, IBM researcher E.F.Codd accepted the ACM Turing Award, the highest honor in the computer science community. Dr. Codd is also another computer scientist who has won this honor for his great contribution to the field of databases after Charles W. Bachman.
11. The SystemR prototype was installed at three customers, namely: Boeing, Pratt & Whitney and Upjohn Pharmaceuticals. This marks that SystemR is technically a relatively mature database system that can support important commercial applications.
12. Louis V. Gerstner took over IBM. Under the command of this management master, IBM carried out drastic reforms to reverse the decline in one fell swoop.
13. IBM released the DB2 parallel version of VDB2 running on RS/6000SP2 since then, it has a scalable architecture that can adapt to large data warehouses and complex query tasks.
14. IBM released DB2CommonServerV, which is the first object-relational database product that can run on multiple platforms, and can provide full support for the web. DataJoinerfor AIX was also born this year, and the product gave DB2 the ability to support heterogeneous databases.
15. IBM researchers Don Chamberlin and RayBoyce published the paper "SEQUEL: AStructured English QueryLanguage" through the practice of the SystemR project. The SEQUEL language proposed in the paper is a set of non-programmed query languages that are more suitable for end users than relational calculus and relational algebra. The SQL language we are now familiar with is developed based on it.
16. The first IDUG European Conference was held in Geneva, Switzerland. This marks the globalization trend of DB2 applications.
17. DB2ForMVSV4 introduces distributed computing (data sharing) on the host through the implementation of parallel Sysplex technology.
18. The first IDUG North America Conference was held in Chicago, USA.
19. IBM released SQL/DSforVSEandVM. This is the industry's first commercial database management system with SQL as the interface. The system is also designed based on the SystemR prototype.
20. IBM released DB2forOS/2V?DB2forOS/2 can be abbreviated as DB2/? and DB2forRS/6000V?DB2forRS/6000 can be abbreviated as DB2/?. This is the first time DB2 has appeared on Intel and Unix platforms.
21. IBM has released an OS/2V0 extended version with relational database capabilities. This is the first time that IBM has expanded its relational database processing capabilities to microcomputer systems. This is also the prototype of DB2forOS/UnixandWindow.
22. IBM researcher Jim Gray published a paper called "Granularity of Locks and Degrees of Consistencyina Shared DataBase", which formally defined the concept of database transactions and the mechanism of data consistency.
23. IBM successfully developed IMSV on IBM360 computers. This is the industry's first hierarchical database management system and is also the most famous and typical hierarchical database. Today, when relational databases are popular, many companies are still using the database, which shows its vitality.
24. After much anticipation, IBM released DATABASE?DB?forMVS (internal codenamed "Eagle"), and a brand that has been prosperous has emerged.
25. The IBM SystemR project team published the paper "ASystemR:RelationalApproachtoDatabaseManagement", which describes the prototype of a relational database.
26. The IBM Research Center launched the SystemR project, aiming to explore and study the practical feasibility of relational databases under multiple users and large amounts of data. This project occupies an important significance in the history of DB2 development and lays a good foundation for the advent of DB2. Due to a large number of achievements that have played a key role in the development of database technology, the project was awarded the ACM Software System Award in 1988.
27. IBM defines CommonSQL and IBM distributed relational database architecture (DRDA) and implements it on all IBM relational database management systems.
28. System/38V7 was released. The system is equipped with a query optimizer for the first time, which can optimize the application's access plan.
29. The first version of DB2 on Windows NT and SINIX platforms (DB2V? is released.
30. IBM released SQL/provides SQL support for AS/400 servers that integrate a relational database management system.
31. IBM announced that DB2 products on OS/2 and AIX platforms can provide support for multimedia data and object-oriented applications.