Oracle Database is a relational database that you can use to store, use, and modify data. The Java Database Connectivity (JDBC) standard is used by Java applications to access and manipulate data in relational databases.
JDBC is an industry-standard application programming interface (API) that lets you access a RDBMS using SQL from Java. JDBC is based on the X/Open SQL Call Level Interface (CLI) and complies with the Entry Level of the JDBC escape standard. Each vendor implements the JDBC Specification with its own extensions.
Universal Connection Pool (UCP) is a connection pool used to cache the database connection objects to reuse the connections, thus improving the performance.
Java in the Database (OJVM) helps group SQL operations with Java data logic and load them into the database for in-place processing.
This chapter introduces you to the JDBC driver, Universal Connection Pool (UCP) and Java in the Database (OJVM) with Oracle Database 12c Release 2 (12.2)
Universal Connection Pool
Java in the Database (OJVM)