Answer is “Normalization”
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Which approach is a classical approach to database design?
There are two classical approaches to database design: Top-down design starts by identifying the data sets and then defines the data elements for each of those sets. This process involves the identification of different entity types and the definition of each entity’s attributes.
What is the top down design approach in database design?
A top down approach is used to create a new database. You model the objects at a logical level, then you apply the objects to a physical database design. For example, a relational database would need the objects to be mapped to tables.
Is a classical approach to database design *?
| Q. | ______________ is a classical approach to database design? |
|---|---|
| B. | top – down approach |
| C. | left – right approach |
| D. | right – left approach |
| Answer» b. top – down approach |
What are the types of key in the database design Mcq?
| Q. | How many types of keys in Database Design? |
|---|---|
| B. | primary key |
| C. | foreign key |
| D. | all of these |
| Answer» d. all of these |
Which is bottom-up approach to database design?
Answer is “Normalization“
Which of the following is a bottom-up approach in SQL?
The bottom-up approach begins with the specific details and moves up to the general. This is done by first identifying the data elements (items) and then grouping them together in data sets. In other words, this method first identifies the attributes, and then groups them to form entities.
What is meant by bottom-up approach?
Generally, the bottom-up approach focuses its analysis on specific characteristics and micro attributes of an individual stock. In bottom-up investing concentration is on business-by-business or sector-by-sector fundamentals.
Is ER model a bottom-up approach?
ER model is used to represent real life scenarios as entities. The properties of these entities are their attributes in the ER diagram and their connections are shown in the form of relationships. An ER model is generally considered as a top down approach in data designing.
Which method is called top-down approach?
A top-down approach (also known as stepwise design and stepwise refinement and in some cases used as a synonym of decomposition) is essentially the breaking down of a system to gain insight into its compositional sub-systems in a reverse engineering fashion.
What is DBMS Mcq?
Explanation: The DBMS (or Database Management System) is a kind of system software used for several operations such as creating tables/databases, storing data, managing databases. It also allows modifying the data stored in the database as well.
Which of the following features are provided by DBMS Mcq?
Explanation: The important features are: 1) Provides backup for the data stored by the user and the user can retrieve the data whenever required. 2) Provides User-interface to access the data. 3) Only authorized users can access the stored data.
Which is the logical design of the database?
Logical database design is the process of transforming (or mapping) a conceptual schema of the application domain into a schema for the data model underlying a particular DBMS, such as the relational or object-oriented data model.
Which keys are used in relational database design Mcq?
DataBase Management System Keys in DBMS MCQ : General Knowledge Question and Answer. Primary Key: A primary is a column or set of columns in a table that uniquely identifies tuples (rows) in that table. Super Key: A superkey is a set of one or more columns (attributes) to uniquely identify rows in a table.
What is the data model Mcq?
Which of the following schemas defines the stored data structures in terms of thedatabase model used?
| Q. | Which of the following is a Data Model? |
|---|---|
| B. | object based data model |
| C. | all of the options are correct |
| D. | relational data model |
| Answer» c. all of the options are correct |
How many types of keys is database design?
There are mainly 5 types of Keys, that can be mentioned in the database. Candidate Key – The minimal set of attributes which can uniquely identify a tuple is known as a candidate key.
What is top-down and bottom-up approach in database?
The top-down method also can have shortcomings. In some cases, top-down design can lead to unsatisfactory results because the analyst and end-users can miss something that is important and is necessary for the system. The bottom-up approach begins with the specific details and moves up to the general.
What are the approaches of database?
1.4The Database Approach
- Data Definition: providing a way to define and build the database.
- Data Manipulation: providing a way to insert and update data in the database.
- Query Execution: retrieving information from the data in the database.
- Data Integrity: ensuring that data stored is well-formed.
Which of the following is not the rule to create a good database design Mcq?
Which of the following is not a feature of a good relational design? Explanation: Allowing redundancy of attributes makes it very difficult for data extraction. So, It is not a good relational design feature. Explanation: The dependency rules specified by the database designer are known as functional dependencies.
What is top-down approach and bottom-up approach in programming?
Top-Down Model. 1. Focus. In Bottom-Up Model, the focus is on identifying and resolving smallest problems and then integrating them together to solve the bigger problem. In Top-down Model, the focus is on breaking the bigger problem into smaller one and then repeat the process with each problem.
Why Oops is bottom-up approach?
Bottom-Up Design Model:
In this design, individual parts of the system are specified in detail. The parts are linked to form larger components, which are in turn linked until a complete system is formed. Object-oriented language such as C++ or java uses a bottom-up approach where each object is identified first.