What is a key-value store in NoSQL database systems?
- A data store limited to string values only
- A database system that exclusively uses foreign keys
- A database system that stores data in a flexible, schema-less way using key-value pairs
- A system that uses only numeric keys for data retrieval
In a NoSQL key-value store, data is stored as key-value pairs, where the key is a unique identifier and the value is the associated data. This model allows for efficient and fast retrieval of data, making it suitable for various applications like caching and session storage.
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