Document Description File Type Size pega-20211220.xsd XBRL Taxonomy Extension Schema EX-101.SCH 2 KB pega-20211220_lab.xml XBRL Taxonomy Extension Label Linkbase EX-101.LAB 24 KB pega-20211220_pre.xml XBRL Taxonomy Extension Presentation Linkbase EX-101.PRE 13 KB pega-20211220_htm.xml XML 11 KB