Database DBMS SQL ORACLE
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This document provides information about databases, database management systems (DBMS), relational database management systems (RDBMS), and Oracle. It discusses what a database is, how it can store data, and the differences between DBMS and RDBMS. DBMS were introduced in the 1960s and followed navigational data models, while RDBMS emerged in the 1970s using relational models with tables, keys, and indexes. The document also provides a brief history of database evolution and an overview of Oracle, including its advantages like market presence, performance, support for multiple databases, backup/recovery capabilities, and portability. It concludes with information about Oracle database security features like automatic secure configurations and new password protections.
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Database systems introductionBalasingham Karthiban Database systems can be summarized in 3 sentences:
A database system consists of a database, database management system (DBMS), and users. The database contains organized data, the DBMS manages access to the data and provides utilities for querying and updating it, and users interact with the system for data entry, retrieval, and administration. Over time, database models have evolved from hierarchical and network models to the prevalent relational model to better support data sharing and querying across systems.
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Database DBMS SQL ORACLE
- 6. DBMS = Database + DBMS Software “ “
- 8. •D i f f e r e n c e B e t w e e n D B M S R D B M S • Database Management System • RelationalDatabase Management System
- 9. Sl.# DBMS RDBMS 1 Introduced in 1960s. Introduced in 1970s. 2 During introduction it followed the navigational modes (Navigational DBMS) for data storage and fetching. This model uses relationship between tables using primary keys, foreign keys and indexes. 3 Data fetching is slower for complex and large amount of data. Comparatively faster because of its relational model. 4 Used for applications using small amount of data. Used for huge applications using complex and large amount of data. 5 Data Redundancy is common in this model leading to difficulty in maintaining the data. Keys and indexes are used in the tables to avoid redundancy. 6 Example systems are dBase, Microsoft Acces, LibreOffice Base, FoxPro. Example systems are SQL Server, Oracle , MySQL, MariaDB, SQLite.
- 10. The Evolution of Database • Navigational DBMS • The introduction of the term database coincided with the availability of direct-access storage (disks and drums) from the mid- 1960s onwards. • 1960 • SQL DBMS • he first version was ready in 1974/5, and work then started on multi-table systems in which the data could be split so that all of the data for a record • Late 1970 NoSQL and New SQL • XML databases are mostly used in enterprise database management, where XML is being used as the machine-to- machine data interoperability standard. • 2000 • Relational DBMS • Edgar Codd worked at IBM in San Jose, California • the lack of a "search" facility • 1970 • On the desktop • C. Wayne Ratliff the creator of dBASE stated: "dBASE was different from programs like BASIC, C, FORTRAN, and COBOL in that a lot of the dirty work had already been done.• 1980
- 12. Advantages Market Presence Oracle is by far the largest RDBMS Vendor, and spends more on R&D than most of its competitors . Performance Speed of a *tuned* Oracle database and application is quite good, even with large databases. Multiple Database Support Oracle has a superior ability to manage multiple databases within the same transaction using a two- phase commit protocol. Backup & Recovery Oracle provides industrial strength support for on-line backup and recovery and good software fault tolerance to disk failure. Portability Oracle is ported to more platforms than any of its competition Version Changes Oracle seem very good at informing you in detail as to what is not going to be supported in the next major release.
- 13. Oracle Database Security • Major 4 security measures Automatic Secure Configuration New Password Protections Encryption Enhancements Directory Security Enhancement When you create a new database, you can use Database Configuration Assistant (DBCA) to automatically create a more secure configuration in releases of Oracle Database. Te utinam debitis consequuntur mea, posse debitis electram vel at, sumo affert meliore nec ei. Password complexity verification ensures that users set complex passwords when setting or resetting passwords. you can use Oracle Data Pump to compress and encrypt an entire dump file set. You can optionally compress and encrypt the data, metadata, or complete dump file set during an Oracle Data Pump export.
- 16. The End
Editor's Notes
- #4: 1. Organized Collection Of Data 2. Used For Storing Data And Information For School Institute Anything 3. Stored In A Software Not In Hard Form.
- #5: Tables Used Software Word Excel Access Oracle SQL Server MySQL Dbase Foxpro
- #6: 1. Enables User To Create and manage database 2. It is used for controlling various databases in the desktop computer or server. 3. It was also termed as Navigational Database Management System. 4. Database management system is used for creating database, maintained database and provides the means of using the database
- #7: Data stored in file system (mainly in system) but no relation in files and tables Data stored in hierarchical form or a table form
- #8: 1. RDBMS follows Relational Model in which the data is stored in multiple tables and the tables are related to each other in the form of Primary Keys and Foreign Keys. 2. Data is stored in Tables. 3. All The Tables have relation between them. 4. Relationship are created by means of keys.
- #12: Oracle Database (commonly referred to as Oracle RDBMS or simply as Oracle) is an object-relational database management system[3] produced and marketed by Oracle Corporation. Oracle database is the database software developed by Oracle. Oracle’s database is a relational database management system (RDBMS). Oracle database was first released on 1979. An Oracle database is a collection of data treated as a unit. The purpose of a database is to store and retrieve related information.