If the columns to be matched in a join have the same name, you can use the period (.) clause followed by the column name.
A clause is known to be a set or group of words that is said to be made up of a verb which is known to usually have other components.
Note that A clause can be made to form part of a sentence or it is said to be able to a complete sentence itself.
The period of agreement is seen as the contract period that is the number of days that exist between a given start date and its end.
Hence, based on the above, in regards to java, If the columns to be matched in a join have the same name, you can use the period (.) clause followed by the column name.
Learn more about Clause from
https://brainly.com/question/541212
#SPJ1