Last year two associates from Greenplum suggested that I read a very smart academic paper titled “Efficiently Compiling Efficient Query Plans for Modern Hardware” by Thomas Neumann. Having reiterated the idea of database supercomputing in my last blog (here)… I can now suggest this paper to you. In short this paper suggests that the classic…
This is the second post (see Part 1 here) on how vendors adjust their architecture without admitting that the previous architecture was flawed. This time we’ll consider Teradata and in-memory…. When SAP HANA appeared Teradata went on the warpath with a series of posts and statements that were pointed but oddly miscued (see the references below).…
I’m working on a new idea… it may or may not pan out… but here are some concepts for your consideration… with some thoughts on their performance implications. First a reminder… a reality check. In my experience if you POC two databases at about the same price point…and one is 30% faster than the other, 1.3X, then…
I very much like Curt Monash’s posts on dynamic schemas and schema-on-need… here and here are two examples. They make me think… But I am missing something… I mean that sincerely not just as a setup for a critical review. Let’s consider how dynamism is implemented here and there…so that I can ask a question of the…
I would like to point out a very important section in the paper on Hekaton on the Microsoft Research site here. I will quote the section in total: 2. DESIGN CONSIDERATIONS An analysis done early on in the project drove home the fact that a 10-100X throughput improvement cannot be achieved by optimizing existing SQL…
This short post is intended to provide a quick warning regarding in-memory columnar and cpu requirements… with a longer post to follow. When a row is inserted or bulk-loaded into a DBMS, if there are no indexes, the amount of cpu required is very small. The majority of the time is spent committing a transaction…
I changed the picture to show you the billboard SAP bought on US101N right across from the O HQ… – Rob Larry Ellison announced a new in-memory capability for Oracle 12c last night. There is little solid information available but taken at face value the new feature is significant… very cool… and fairly capable. In…
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