Of the following data storage technologies: Permanent Data Storage COBOL Hierarc
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Question
Of the following data storage technologies: Permanent Data Storage COBOL Hierarchical DBMS Network DBMS Relational DBMS Object-oriented DBMS XML a. Which requires the most understanding about how the data is actually stored? b. Which have the ability to ensure that data fields conform to definitions (i.e., data typing)? c. Which would be more space-efficient at representing a data model containing Dept.-Course-Instructor: Hierarchical DBMS or Network DBMS? Why? d. Which was designed to support exchange of information between organizations, companies, and/or applications?Explanation / Answer
A) Permanent data storage
We need to know the data storage structure inorder to use that efficiently otherwise it is very difficult to know which data resides in which location.
2. Relational DBMS
In this relational database the data will be stored according to the table definition which we implemented. It doesn't store tha data if we try to change that.
3. Hierarchical DBMS.
It is the more space efficient as in this tha data is stored according to the hierarchy. But in the network model data is stored in the form of tree like structure with each object as node and the relation as arcs with the dependent object.
4. XML
XML is the labguage which is used to exchange the large data between applications, organizations etc through the web.
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