It should not really matter what the source is as once registered to Metadata all are accessesd via a libref. As you asked for program to unload and load a LASR table, my assumption was whatever source you are loading from (be it SAS, Oracle, MySql), it is first loaded into LASR server and loaded tables registered in Metadata with the LASR library. If that would have been the case, the script need only the libref i.e., the LASR library to load and unload. In my case, LASR tables were registered in Metadata.
Will check if some other solution can come up for your requirement.
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