Database vendors don’t usually admit to shortcomings… they protest that they have no shortcomings until the market suggests otherwise… then they make some sort of change that signals an admission. This post will explore three of these admissions: Oracle and the shared-nothing architecture, DB2 on the mainframe and the shared-nothing architecture, and Teradata and in-memory…
In the thread I’m now working on (Part 1, Part 2) I’ve talked about Exadata and a criteria for evaluating split architectures. It is worth quickly talking about homogeneous systems with no split like Teradata or Greenplum or HANA… systems with no separate query-capable top end. Every parallel shared-nothing DBMS has big pipes to move…
In my blog yesterday (Part 1) I suggested that we could evaluate RDBMS-Hadoop integration architecture using three criteria: How parallel are the pipes to move data between the RDBMS and the parallel file system; Is there intelligence to push down predicates; and Is there more intelligence to push down joins and other relational operators? But…
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…
I recently listened to a session by Juan Loalza of Oracle on the 12c In-memory option. Here are my notes and comments in order… There is only one copy of the data on disk and that is in row format (“the column format does not exist on disk”). This has huge implications. Many of the…
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…
Here are some quick thoughts on Oracle 12c… First, I appreciate the tone of the announcements. They were sober and smart. I love the pluggable database stuff. It fits into the trends I have discussed here and here. Instead of consolidating virtual machines on multi-core processors and incurring the overhead of virtual operating…
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