What is external bound block?

An external bound block refers to a specific type of data structure or storage mechanism used in various computing contexts, particularly in databases and file systems. It typically serves as a boundary that defines limits for data access or organization, helping to manage how data is stored, retrieved, or processed. This concept often relates to optimizing performance and ensuring efficient data handling by setting constraints on data operations. The exact implementation and purpose can vary based on the specific technology or system in use.