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What is a Database?

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An organized collection of data that allows for efficient storage, retrieval, and management of information.

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What are the types of Database Technologies?

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1. Relational Databases (RDBMS) 2. NoSQL Databases 3. NewSQL Databases 4. In-Memory Databases

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What is a Relational Database (RDBMS)?

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Data is stored in tables with rows and columns and uses SQL for managing data.

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What is NoSQL Database?

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Suitable for unstructured or semi-structured data, including Document Stores, Key-Value Stores, Graph Databases, and Column-Family Stores.

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What is NewSQL Database?

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Combines the scalability of NoSQL with the structure of RDBMS.

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What is In-Memory Database?

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Stores data in main memory for fast access.

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What is the Relational Model?

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A method of organizing data into tables (relations), proposed by Edgar F. Codd in 1970.

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What are the key components of the Relational Model?

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1. Tables (Relations) 2. Rows (Tuples) 3. Columns (Attributes) 4. Primary Key 5. Foreign Key

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What is a Primary Key?

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A unique identifier for each record in a table.

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What is a Foreign Key?

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Links data between two tables, establishing a relationship.