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Which of the following data storage models is typically used in a relational database management system (RDBMS)?
  • a)
    Object-Oriented model
  • b)
    Hierarchical model
  • c)
    Relational model
  • d)
    NoSQL model
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Which of the following data storage models is typically used in a rela...
Relational databases use the relational model to organize and store data.
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Which of the following data storage models is typically used in a rela...
The relational model is typically used in a relational database management system (RDBMS).

The relational model is a data storage model that is widely used in RDBMS. It is based on the principles of mathematical relations and provides a structured way to organize and store data. The model was first proposed by Edgar F. Codd in 1970 and has since become the dominant model for database systems.

Features of the relational model:

1. Tables: The relational model organizes data into tables, which consist of rows and columns. Each table represents an entity or concept, and the rows represent individual instances of that entity. The columns represent attributes or properties of the entity.

2. Keys: The relational model uses keys to uniquely identify rows in a table. A primary key is a column or a combination of columns that uniquely identifies each row in the table. Foreign keys are used to establish relationships between tables.

3. Relationships: The relational model allows for the establishment of relationships between tables. Relationships can be one-to-one, one-to-many, or many-to-many. These relationships help to organize and structure the data, and they ensure data integrity and consistency.

4. Normalization: The relational model supports the concept of normalization, which is the process of organizing data to eliminate redundancy and improve data integrity. Normalization involves breaking down large tables into smaller, more manageable tables, and defining relationships between them.

5. Structured Query Language (SQL): The relational model is closely associated with SQL, a programming language used to interact with relational databases. SQL provides a set of commands and functions for querying, inserting, updating, and deleting data from the database.

Advantages of the relational model:

- Flexibility: The relational model allows for flexible querying and manipulation of data. Users can easily retrieve and update data using SQL commands.

- Data Integrity: The relational model enforces data integrity through the use of keys and relationships. This ensures that the data is accurate and consistent.

- Scalability: The relational model can scale to handle large amounts of data. As the number of records and tables increases, the database system can still perform efficiently.

- Standardization: The relational model and SQL have become industry standards for data storage and manipulation. This allows for easy integration and interoperability between different database systems.

In conclusion, the relational model is the most commonly used data storage model in RDBMS. It provides a structured and efficient way to store and retrieve data, and it offers several advantages in terms of flexibility, data integrity, scalability, and standardization.
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Which of the following data storage models is typically used in a relational database management system (RDBMS)?a)Object-Oriented modelb)Hierarchical modelc)Relational modeld)NoSQL modelCorrect answer is option 'C'. Can you explain this answer?
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