Which of the following data schemas shown?

Refer to the exhibit.

Given the diagram below:

Which of the following data schemas shown?
A . Key-value pairs
B . Online transactional processing
C . Data Lake
D . Relational database

View Answer

Answer: D

Explanation:

A relational database is a type of database that organizes data into tables, where each table has a fixed number of columns and a variable number of rows. Each row in a table represents a record or an entity, and each column represents an attribute or a property of that entity. The tables are linked by common fields, called keys, which enable the database to establish relationships between the data. A relational database schema is a diagram that shows the structure and organization of the tables, columns, keys, and constraints in a relational database. The diagram given in the question is an example of a relational database schema, as it shows two tables: “Runs” and “Experiments”, with their respective columns, data types, and primary keys. The “Runs” table also has a foreign key that references the “ExperimentId” column in the “Experiments” table, indicating a relationship between the two tables. Therefore, the correct answer is D.

Reference: What is a database schema? | IBM, Database Schema – Javatpoint