The FREE Cybersecurity Glossary by Thor Pedersen!

NoSQL: A category of database management systems that provides a mechanism for storage and retrieval of data, which is modeled in means other than the tabular relations used in relational databases. NoSQL databases are designed for distributed data stores with large data sets, and for scalable, high-performance operations.

N-tier Architecture: A client-server architecture where the presentation, application processing, and data management functions are logically separated into separate layers or tiers. This separation allows developers to modify or add a specific layer rather than reworking the entire application, improving scalability and performance.

Null: In programming, null represents the absence of a value or a non-existent reference. In databases, a null value indicates missing or unknown data. It's crucial to handle null values properly to avoid runtime errors and maintain data integrity.

Numeric check: A numeric check is a data validation technique used to ensure that numerical input or data conforms to specified formats, ranges, or values. It is essential for maintaining data integrity and can prevent errors related to incorrect data entry. Examples include validating that a phone number contains only digits or that an age field is within a reasonable range.