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Write short note on Data models?
Data models: A data model is an abstract model which elaborates how data is represented and accessed. The term data model has two commonly accepted meanings:
• A data model theory that is a formal description of how data may be structured and accessed.• A data model instance that is applying a data model theory to create a practical data model instance for a few particular application.
Write the syntax of creating an INDEX ? Syntax of Creating an Index: CREATE [BITMAP] [UNIQUE] INDEX ON ( [, ] . . .);
List and also explain the dissimilar stages of DDLC ?
Oracle & Distributed Databases 1. Differentiate between PL/SQL functions and procedures. 2. Draw the diagram of logical structure of oracle database and explain it in brief.
Write the motivations led to development of OO-DBMS? 1. Programmer frustration with RDBMSs. 2. Requirement for special features.
What is the function of a Domain? A domain defines the technical settings of a table field. A domain describes a value range, which sets the permissible data values for the
external and internal mapping with examples
What is Distributed system ? Distributed System - A distributed system consists of a number of processing parts in which are interconnected through a computer network and in
Fragmentation: It is definite as partitioning of a relation into various fragments.Every fragment can be stored at a dissimilar site.
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
In the ER diagram, one example of subclassing is depicted following the Services entity. The subclasses Item Based and Time Based are created. The entity Services gains the attribu
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