Oracle
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Oracle- Database Management System
Data management is an extraordinarily old craft. Aristotles scheme of interlocking classifications of knowledge in his work Physica is a data-management effort. In the early 1800s the Jacquard loom used holes punched in paper cards to represent instructions for controlling the action of a loom. These cards became the basis for Herman Holleriths card-sorting device, used for the 1890 U.S. census
To make it possible to create databases with customized menus and specialized forms, database management programs emerged. The Oracle Corporation, the second largest independent software company, was founded in 1977 by Larry Ellison, Oracles current Chairman, President and CEO, Bob Miner (died in 1994) and Ed Oates, who currently serves as advisor for several startups. Under the original moniker, Relational Software Inc., or RSI, Ellison, Miner and Oates created the first commercial SQL (Structured Query Language) database – V2 – based entirely on published research by IBM.
“In 1976 computer software designer Wayne Ratliff, working at the NASA Ames Research Center, began to design a construction kit program for building databases on personal computers”
Oracle saves records relating to each other in a table. Every table has a field or a combination of fields that uniquely identifies each record in the table. The field names of each record in the table are the same, although the field values may differ. (
Database management systems transfer data from a disk to the main memory or what is called the Random Access Memory (RAM). RAM, named because a computer user can quickly go to any part of the main memory to reach the desired data. The computer can manipulate only data that is in main memory. Therefore, every program and file that you access must be copied from a storage device into the main memory. The amount of main memory on a computer is crucial because it determines how many programs can be executed and how much data is readily available to a program. RAM is used to store data or instructions temporarily, while they are being used or changed by the user. For example, a letter being created using a word-processing program or a game being played is stored in RAM. The larger the capacity of RAM, the greater the number of bytes it can hold the more efficient the computer. Higher amounts of RAM make it possible for a user to have several programs open simultaneously, and to perform memory-intensive tasks such as editing digital video. The reasons why DBMS provide these capabilities are because the main memory is volatile. By the early 2000s, typical personal computers being sold had between 256 megabytes (million bytes) and 1 gigabyte (trillion bytes) of RAM
Oracle is