data abstraction and independence, data security, logging and auditing of activity, support for concurrency and transactions, support for authorization of access, access support from remote locations, DBMS data recovery support in the event of damage, and enforcement of constraints to ensure the data ...
Log manager.The DBMS records all changes made to data managed by the DBMS. The record of changes is known as the log, and the log manager component of the DBMS is used to ensure that log records are made efficiently and accurately. The DBMS uses the log manager during shutdown and start...
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Neo4j is anative graph database, which means that it implements a truegraphmodel all the way down to the storage level. Instead of using a "graph abstraction" on top of another technology, the data is stored in Neo4j in the same way you may whiteboard your ideas. ...
APhysical Data Modeldescribes a database-specific implementation of the data model. It offers database abstraction and helps generate the schema. This is because of the richness of meta-data offered by a Physical Data Model. The physical data model also helps in visualizing database structure by...
Relational database management systems (RDBMS) currently are the most widely-deployed type of DBMS. The relational abstraction of rows and columns accessed using Structured Query Language (SQL) is well understood by most IT professionals. In contrast, object database systems can be better-suited for...
Flexibility: Middleware can help improve the flexibility of software applications by providing a layer of abstraction between the application and the underlying infrastructure. This abstraction layer can make adding new features and capabilities to the software easier. Conclusion In the blog, we concluded...
An ER model is typically drawn at up to three levels of abstraction: Conceptual ERD / Conceptual data model Logical ERD / Logical data model Physical ERD / Physical data model While all the three levels of an ER model contain entities with attributes and relationships, they differ in the purp...