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.
An annuity is a contract in which an insurance company makes a series of income payments at regular intervals in return for a premium or premiums you have paid. Annuities are often bought for future retirement income. Only an annuity can pay an income that can be guaranteed to last as long as you live.