Episode 137: SQL with Jim Melton

Standardization

The standardization of SQL was driven by the need for a unified language that could transcend vendor-specific implementations. Jim Melton highlights the importance of participation from both vendors and users in the development of SQL standards. He notes that the initial standardization was a modest effort, providing only basic functionalities, but it paved the way for more comprehensive developments 1. Melton explains that the motivation for standardization included the illusion of portability and the flexibility it offered for database optimizations 2.

The first version of the standard was, I think it's really fair to call it a toiling. It was very much a first step, I would even say a baby step, because it provided only the basic four statements.

--- Jim Melton

The evolution of SQL standards allowed for significant advancements in database management and application development.

   

Vendor Influence

Major vendors like Oracle, IBM, and Sybase played a crucial role in shaping SQL standards, motivated by the desire to create a perception of portability and reduce vendor lock-in. Jim Melton explains that this collaboration enabled significant creativity in database engines, allowing for more advanced optimizations 2. The evolution from SQL 89 to SQL 92 marked a significant leap, introducing comprehensive data manipulation capabilities and expanding the language's power 3.

By the time SQL 92 was published, we started work on what went by the name of SQL three for a while.

--- Jim Melton

This progression continued with SQL 1999, which incorporated object-oriented features, further enhancing SQL's versatility.