A POS System is the hardware and software used to record the financial transactions of a retail store. 1  It is the best tool for a store owner to manage and assess her business. 2  Your POS system should alert you when you need to reorder and flag inventory that is dead in your store and not moving.
JPO is a framework for persistence (storage and retrieval) of domain (or data) objects in Java-based database applications. The object/relational impedence missmatch is widely regarded as a complex problem with no easy solution.
Oracle Technology Network Java. The Java Data Objects (JDO) API is a standard interface-based Java model abstraction of persistence, developed under the auspices of the Java Community Process. The original JDO 1.0 is Java Specification Request 12 ( JSR 12), and the current JDO 2.0 is Java Specification Request 243 ( JSR 243).