Friday 12 December 2003 — This is over 19 years old. Be careful.
Winter Corporation conducts a survey of large databases, ranking the largest in a number of categories. The top by total size this year is France Telecom with a 29-terabyte Oracle database. Most rows goes to AT&T with half a trillion rows in a Daytona database. There are lots of other categories. Surprising to me was how many off-brand databases are in the lists. Daytona? Teradata?
Note also that the web sites makes a distinction between databases used for data warehousing and those used for OLAP. In the latter case the top database sizes are a bit smaller and the DBMSs used are DB2 and IDMS.
Now imagine what it would be like to have a multi-terabyte database that had to handle 40,000+ transactions per second. This is the world of the "off-brand" databases.
FYI -- I was involved (slightly) with a 52TB database over 5 years ago. This survey is clearly incomplete -- and not surprising -- the size of these databases, the transactional throughput, the operating characteristics, etc. are competitive advantages to the enterprises that own them. And these enterprise might easily spend > $100M/year maintaining and updating these databases.
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