Currently, Glop queries are not entered directly into the server; instead you download the source code and data to your own computer and run your queries there. It uses the Prolog programming language, so you'll need sicstus (or some other version of Prolog) on your computer in order to compile it.

The file you get from the download is a gnu-zipped tar file, so the first thing you need to do is to unpack it (unless your WWW browser has already done it automatically). For example, if you are using a Unix system, you might type

	gunzip < glop.tar.gz | tar -xf -
Then look over the makefile, adjust it for your system if necessary, and type
	make glop
Then to run a query, you need to save it into a file and type
	glop < query_file > output_file

Arrow Download glop.tar.gz

Writing Glop queries
The current schema

Back to the query modes page.