ICTDBS506 SQL Vs NoSQL

Which type of database does NOT require a fixed schema and uses varying query languages for data manipulation?

• SQL database

• NoSQL database

Answer explanation

NoSQL databases do not require a fixed schema and can handle structured, semi-structured, and unstructured data. They use varying query languages, and some do not even have a standardized query language like SQL

What type of database is best suited for handling well-defined structured data with tables and foreign keys that establish relations between different entities?

• SQL database

• NoSQL database

Answer explanation

SQL databases are best suited for handling well-defined structured data using tables and relations formed by foreign keys between different entities.

Which type of database offers horizontal scalability, allowing for the addition of multiple nodes in a cluster to handle increased workloads?

• SQL database

• NoSQL database

Answer explanation

NoSQL databases offer horizontal scalability by using multiple nodes in a cluster to handle increased workloads, allowing for easy scalability with additional servers.

SQL databases are based on a structured query language that uses keywords like SELECT, INSERT, UPDATE, and DELETE to interact with the database. What type of language do NoSQL databases use?

• Hierarchical language

• Non-relational language

• Tabular language

• Structured language

Answer explanation

oSQL databases use varying non-relational languages, some of which do not have a standardized query language like SQL. They may use JSON, XML, or other data formats to support unstructured data.

SQL databases are commonly used for applications with well-defined structures like customer orders and employees' departments. What kind of applications are NoSQL databases suitable for?

• Applications with structured data only

• Applications with unstructured data only

• Applications with both structured and unstructured data

• Applications with no data relations

Answer explanation

NoSQL databases are suitable for applications with structured, semi-structured, and unstructured data. They offer more flexibility in accommodating different data types and formats.