Sunday, January 2, 2011

why sybase still popular on Wall Street

Reason: years ago, sybase made sure it had the fastest insert performance, targeting market data feed. However, the fastest market data feed uses flat files, according to a 2sigma engineer.

Reason: for smaller databases, sybase outperforms DB2
Reason: oracle is not a friendly company.
Reason: As of 2011, MSSQL is still quite similar to sybase
Reason: bcp is supposed to be the fastest way to store large amounts of data
Reason: mssql is not optimized for unix but most wall st database servers run unix.

A few answers from veterans
1) Miao did data warehousing for more than 10 years. Sybase is the most "memorable" RDBMS, mostly due to performance. Miao summaraized "Oracle -- marketing, Sybase -- performance". I mentioned that sybase runs on unix and windows -- one size fit all, whereas Oracle is mostly used on unix, with more opportunity for customization and optimization. However, Miao shook his head and said sybase performance wins. BCP ("Bulk CoPy"), the sybase Bulk loader was singled out as high performance.

2) my Wall St. DB2/sybase trainer said sybase performs better for small tables (up to 100 mil rows) but favored DB2 for large tables.

3) another Wall St. veteran told me sybase syntax is convenient. Personally, I feel sybase is no inferior than Oracle, but with convenient syntax.

These are the sybase users I know -- GS, MS, ML, Citi, Barc

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New York (Time Square), NY, United States
http://www.linkedin.com/in/tanbin