What are the different types of indices in IMS?

Types of Indices in IMS

In IMS (Information Management System), there are several types of indices that are used to organize and access data efficiently. The key types of indices in IMS include:

• Root Segments: These are the primary access points to the database and often represent the highest level of data organization.
• Secondary Indexes: These are additional access paths to the data that allow for quicker retrieval based on specific key values.
• Bitmap Indexes: These types of indexes are used to optimize queries involving multiple keys by storing the data as a bitmap.
• Logical Relationships: These are used to define relationships between different data segments in IMS databases.

Each type of index plays a crucial role in optimizing data access and retrieval in IMS databases, allowing for efficient data management and retrieval.