Security Security Security of data is important concept
- Slides: 8
Security
Security • Security of data is important concept in DBMS because it is essential to safeguard the data against any unwanted users. • It is protection from malicious attempts to steal or modify data.
There are five different level of security 1. 2. 3. 4. 5. Database system level Operating Network level Physical level Human level
1. Database system level • Authentication and authorization mechanism to allow specific users access only to required data.
2. Operating • Protection from invalid logins • File level access protection • Protection from improper use of “superuser” authority. • Protection from improper use of privileged machine instructions.
3. Network level • Each site must ensure that it communicates with trusted sites. • Links must be protected from theft or modification of messages. Mechanisms used • Identification protocol (password based) • Cryptography
4. Physical level • Protection of equipment from floods, power failure etc. • Protection of disks from theft, erasure, physical damage etc. • Protection of network and terminal cables from wire tapes, non invasive electronic eavesdropping, physical damage etc. , Solution • Replication hardware- mirrored disks, dual busses etc. • Multiple access paths between every pair of devices. • Physical security by locks, police etc. • Software techniques to detect physical security breaches.
5. Human level • Protection from stolen passwords, sabotage, etc. Solution • Frequent change of passwords. • Use of “non-guessable” passwords. • Log all invalid access attempts. • Data audits • Careful hiring practices.
From most important to least important in writing
From most important to least important in writing
Least important to most important
Private securit
Difference between ideal self and actual self
Perbedaan pemasaran dan penjualan
Mengapa keamanan basis data menjadi penting.
Concept of national security
Data warehouse concept
