The tag is used to define a servlet in the web.xml file. The element specifies the fully qualified name of the servlet class, providing the configuration necessary for the servlet container to manage the servlet.

The practice of breaking down a transaction into smaller parts to reduce locking is known as Batch Processing, where a transaction is divided into smaller batches to minimize the duration of locks and increase concurrency.

In database optimization, caching refers to the process of storing frequently accessed data in a temporary storage area, reducing the need to fetch it from the original source repeatedly.

Connection Pooling in JDBC helps in reusing the same connection for multiple database operations, enhancing efficiency and reducing the overhead of opening and closing connections repeatedly.

The ability of an ORM framework to automatically generate SQL queries from object-oriented code is known as Auto-Generating, streamlining the process of interacting with databases using object-oriented code.

Strategies such as caching, database indexing, query optimization, and load balancing can be effective in optimizing an application that frequently queries a large database.

Approaches like using CDN, load balancing, caching, and query optimization can help minimize the load on the database server in a high-traffic web application.

The doHead method in HTTP servlets is used to process the HTTP headers. It does not have a body, making it suitable for handling requests where only the headers need to be processed without returning a full response body.

Techniques like data warehousing, materialized views, scheduled ETL processes, and read-only replicas can help ensure minimal impact on the transactional database system in a reporting system.

Servlets handle requests asynchronously through the use of Asynchronous Servlets, allowing them to perform tasks concurrently without blocking the processing of other requests.