DATABASE FUNDAMENTALS
WHAT IS DATABASE MANAGEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Object/Relational Database Management System (O/R DBMS)
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Extended relational data model (ERDM)
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Entity relationship diagram (ERD)
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Unified Modeling Language(UML)
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Detailed explanation-1: -Which of these data models is an extension of the relational data model? Explanation: All the data are stored in form of memory in the disk. Explanation: Metadata is information about a data. 9.
Detailed explanation-2: -Features of a relational database. Relational databases need ACID characteristics. ACID refers to four essential properties: Atomicity, Consistency, Isolation, and Durability. These features are the key difference between a relational database and a non-relational database.
Detailed explanation-3: -The Extended Relational Data Model (ERDM) is the relational data model’s response to the Object Oriented Data Model (OODM.) Most current RDBMSes support at least a few of the ERDM’s extensions. For example, support for large binary objects (BLOBs) is now common.
Detailed explanation-4: -3) Object-based Data Model: An extension of the ER model with notions of functions, encapsulation, and object identity, as well. This model supports a rich type system that includes structured and collection types.