Oracle Express was a multi-dimensional database and application development environment for building OLAP applications. Normal relational databases store data in two-dimensional tables and analytical queries against them can be very slow.
Annuity Period: The length of time between income payments made under an annuity income plan; the time span may be monthly, quarterly, semi-annually, or annually. Arbitrage: The act of buying and selling commodities in two markets at the same time to benefit from price differences between the markets.
Annuity - Annual payment to keep patent or patent application alive in some countries. Unlike the US, most countries which have annuities require them to be paid both during the pendency of the patent application and after the application issues as a patent.