I have the following maven dependency in my POM file
<dependency>
<groupId>com.teradata.jdbc</groupId>
<artifactId>terajdbc4</artifactId>
<version>16.20.00.10</version>
</dependency>
which I can find on mvnrepository.com here, however when I compile I get an unresolved dependency error and in the error it says it cannot find this dependency in https://repo.maven.apache.org/maven2 (which is true). So I'm wondering why does this exist in mvnrepository.com but not https://repo.maven.apache.org/maven2? Which one is the real central repository?