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What is E-R model?
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Posted Date :
October 23, 2008
This data model is based on real world that consists of basic objects called entities and of relationship among these objects. Entities are described in a database by a set of attributes.
You can also find related Interview Question to
What is E-R model?
What are the major data structures used in RDBMS, Network data model & Hierarchical data model.
RDBMS - Array (i.e. Array of structures)
Network data model - Graph
Hierarchical data model - Trees
What is Data Model?
A collection of conceptual tools for describing data, data relationships data semantics and constraints.
What is Object Oriented model?
This model is based on collection of objects. An object contains values stored in instance variables with in the object. An object also contains bodies of code that operate on the object. These bodies of code are called methods. Objects that contain same types of values and the same methods are grouped together into classes.
What is Waterfall Model?
It's development method in which work "flows down" from one stage into the next stage. Each stage must be completed before the next stage can begin, and returning to a previous stage is often not permissible.
Various Phases are
What Type of Processing model asp.net simulates ?
What is Data Model concept?
Data Model is a collection of conceptual tools for describing data, data relationships data semantics and constraints.
What is Data Model?
Data Model is a collection of conceptual tools for describing data,data relationships, data semantics and constraints.
What are the different layers of OSI model?
OSI model has 7 layers such as,
What is OSI reference model?
OSI(Open System Interconnection) is a network communication standard developed by ISO.
Which layer of OSI reference model is responsible for 'Encryption & Decryption' and 'Compression & Decompression'?
Presentation layer of OSI model is responsible for 'Encryption & Decryption' and 'Compression & Decompression' for data security.
How session layer in OSI model is responsible for Synchronisation and recovery?
Session layer creates certain check points while transmitting volumes of data in a sequence. When there is a problem in the transmission in the middle of any bulk of data, transmission will take place from the check point where it was left. This function of Session layer is called Synchronisation and recovery.
Synchronisation and Recovery in OSI model happens in which layer?
Synchronisation and Recovery in OSI model happens in Session layer. Session layer is also responsible for Token Management.
Open System Interconnection (OSI) Model?
1. Also known as ISO-OSI Reference Model
2. Developed by International Organization for Standardization (ISO)
3. Describes flow of information from one computer to another
4. Consists of seven layers
What is Feature Driven Development model?
Feature Driven Development (FDD) is an iterative and incremental software development process. It is one of a number of Agile methods for developing software and forms part of the Agile Alliance. FDD blends a number of industry-recognized best practices into a cohesive whole
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