Chapter 3: revoke echure

The following defiintins will arm you with the technical jargon to make it through this chapter:

1. An application is a set of Oracle programs that solve a company's or person's business needs.

2. An instance is a portion of computer memory and auxiliary processes required to access an Oracle database.

3. object are software representatins of real-world entities.

4. A datafile is a file on your disk that stores information.

5. a dba or database admistration is a technical wizard who managers the complete operation of the Oracle database.

6. A dirty data block is a portion of computer memory that contains Oracle Data whose value has changed from what was originally read from the database.

7. A hot data block is a block whose data is changed frequently.

In an inventory application, a popular part's quantity_on_hand wocould be in a hot data block since its value undergoes constant change.

8. LRU is an algorithm Oracle uses when it need to make room for more information in memory than will it in the memory holding information, and it needs to put some addtional Information information that has sat idle for the longest period of time.

9. A table holds Oracle Data., it contains of one or more datafiles.

All database objects are stored in tablespaces. It is called a tablespace because it typically holds a database object called a table.

10. rollback is the activity Oracle performs to restore data to it's prior State before a user started to change it.

11. unndo information is the information the databaes needs to undo or rollback a user transcation due to a number of reasons.