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Difference between Operating System and Database Security
Security within the operating system can be executed at various levels ranging from passwords for access to system, to the isolation of concurrent implementing processes with the system. Though, there are a few differences among security measures taken at operating system level as compared to those that of database system. These are:
Figure shows the architecture of a database security subsystem that can be found in any commercial DBMS.
Figure: Database Security subsystem
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Replication : It is definite as a copy of a relation. Every replica is stored at a dissimilar site. The alternative to replication is to store only single copy of a relation which
What are the advantages of object ID? The main advantages of Object IDs are as below: i) IDs are not changing ii) IDs are completely independent of the changes in data v
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The PROJECT operation The project operation is used to choose the records with specified attributes as discarding the others based on some related criteria. This is denotes as ∏
What are the advantages of relational data model? Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer
Question : Mr. Smith Harry has a car manufacturing company which has recently integrated management information system. He wishes to obtain more information on ethics and socia
Performance of Various Concurrency Control Mechanisms
Define- relational algebra. The relational algebra is a procedural query language. It having of a set of operations that take one or two relation as input and make a new relati
Write a query to define tables students and teachers as sub tables of people? Create table students of student under people Create table teachers of teacher under people
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