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What is data abstraction?
Data abstraction is the reduction of a body of data to a simplified representation of the whole. Data abstraction is usually the first step in database design in order to create a simplified framework that can be added to in order to complete the database.
What is the difference between data abstraction and encapsulation?
Data Encapsulation : It is a process of bundling the data, and the functions that use them, as a single unit( atleast in C++) . In C++ the data type "class" is used to achieve this. Data Abstraction : It is a process of exposing only the interfaces and hiding the implementation details from the user. The interface exposed will remain the same: even if the internal implementation changes. This helps the user to use the new functionality without rewriting the client that was designed for previous implementation (strictly speaking ... previous interface).
Does a relational model provide physical and logical data independence?
Since a user can define a views, logical data independence can achieved by using view definition to hide changes in the conceptual schema. since the sql user has no knowledge of how the data is physically represented, relying solely on the relation abstraction for querying, physical data independence is also achieved.
Can there be 2 modes in a data set?
There can be two modes in a data set. For example, in the data set {0,1,2,3,3,4,5,5,9}, there are two modes: 3 and 5.
What the difference between data hiding and abstraction?
Data hiding means, hiding some essential information or as you say a data from other end user or users and abstraction in simple language means hiding complex features and showing only essential features of any object. Was that information useful please let me know. In data hiding we hide the information by using access specifier private, public and protected..so it means we are hiding info from outside the world.But in abstrastion we express only essential feature.. Eg: Three set of customers are going to buy a bike First one wants information about the style. Second one wants about the milage. Third one wants the cost and brand of the bike.So the salesperson explains about the product which customer needs what. So he hiding some information and giving the revelant information.
What is data abstraction and data hiding in oops concepts?
abstraction is show nonessential data to user ,
What is data abstraction?
Data abstraction is the reduction of a body of data to a simplified representation of the whole. Data abstraction is usually the first step in database design in order to create a simplified framework that can be added to in order to complete the database.
What is contract abstraction and procedure of contract abstraction?
Contract abstration means you are creating data for that particular contract for example: Party name, effective date, end date. etc.
Is data hiding and abstraction are same?
no
What are the duties of data abstraction clerk?
health
What is the difference between data hidding and data abstraction?
Abstraction: Abstraction refers to removal/reduction of irrelevant data or unnecessary data or confidential data from a Class. Data hiding: Data hiding is a feature provided by the abstraction for hiding the data from the class.
Layers of data abstraction in dbms?
select*from stludent
Which level of Abstraction describes how data are stored in the data base?
how data are stored would be in a physical layer
What are the characteristics of OOPS?
Data Encapsulation, Abstraction, Inheritance, Polymorphism
What is data accessibility and give an example?
Data flexibility is a quality characteristic.
Give an example of quantitative data?
Quantitative data deals with numbers. It is data that can be measured. An example of this is: 51% of the world's population is female.
What is data abstraction in c sharp?
Abstraction means that all information exist but only the relevent information is provided to the user. Encapsulation assists abstraction by providing a mean of suppressing the non-essential details.
