SQLJ.install_jar, SQLJ.remove_jar, and SQLJ.replace_jar, are a set of procedures in the SQL schema that allow you to store
jar files in the database.
Your jar file has a physical name (the name you
gave it when you created it) and a name (the identifier
you give it when you load it into a particular schema). Its name
is an SQL92Identifier; it can be delimited and must
be unique within a schema. A single schema can store more than one jar file.