0
three levels of data abstraction
are:
1. Physical level : how the data is
stored physically and where it is
stored in
database.
2. Logical level : what information
or data is stored in the database
(like what is the
datatype or what is format of
data.
3.View level : end users work on
view level. if any amendment is
made it can be
saved by other name.
for the database to be usable it
must retrieve data efficently.this
efficency led designer to use
complex data structure in the
database
Wiki User
∙ 10y ago
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What are the subject-matters of data structure?
types of data structure types of data structure
How do you amend a data structure?
How do you amend a data structure?
What are the advantages of data structure?
The tree structure is useful because it easily accommodates the creation and deletion of folders and files.
What is the difference between allocation and search data structure?
difference between serch data structure and allocation data structure
What is a homogeneous data structure and why is this a weakness for RDBMS?
in homogeneous data structure all the elements of same data types known as homogeneous data structure. example:- array
What are the subject-matters of data structure?
types of data structure types of data structure
What do you mean by data independence?
Data independence refers to the ability to make changes in the database structure without affecting the applications that use the data. It is achieved through different levels: physical, logical, and view-level independence. This helps in isolating the applications from underlying changes, providing flexibility and reducing dependency.
What is level data?
three levels of data abstraction are: 1. Physical level : how the data is stored physically and where it is stored in database. 2. Logical level : what information or data is stored in the database (like what is the datatype or what is format of data. 3.View level : end users work on view level. if any amendment is made it can be saved by other name. for the database to be usable it must retrieve data efficently.this efficency led designer to use complex data structure in the database
How do you amend a data structure?
How do you amend a data structure?
What are the advantages of data structure?
The tree structure is useful because it easily accommodates the creation and deletion of folders and files.
What is structural level?
three levels of data abstraction are: 1. Physical level : how the data is stored physically and where it is stored in database. 2. Logical level : what information or data is stored in the database (like what is the datatype or what is format of data. 3.View level : end users work on view level. if any amendment is made it can be saved by other name. for the database to be usable it must retrieve data efficently.this efficency led designer to use complex data structure in the database
What is the difference between allocation and search data structure?
difference between serch data structure and allocation data structure
What is homogeneous data structure?
collection of dissimilar type of data is called non homogeneous data structure as for example structure .
What is the weakness of Data structure diagram?
weakness of data structure diagrams
What is a homogeneous data structure and why is this a weakness for RDBMS?
in homogeneous data structure all the elements of same data types known as homogeneous data structure. example:- array
Which data structure used in database?
You create your own data structure in database.
Every data structure in data warehouse contains time element?
Every data structure in the data warehouse contains the time element. Why?
