Description: A global index is a data structure that allows efficient access to records in a database, facilitating the search and retrieval of information. Unlike local indexes, which are restricted to a single data partition, a global index is accessible across all partitions of a database. This means that regardless of where a record is located in the database, the global index can be used to quickly locate it. Global indexes are particularly useful in distributed or partitioned database systems, where data is divided into multiple segments to improve performance and scalability. By providing unified access to data, global indexes optimize queries and reduce response times, which is crucial in applications requiring high performance. Additionally, they help maintain data integrity and improve efficiency in complex search operations, making them an essential tool for database developers and administrators.
