8 citations · 19 across the 13 of their papers we have counts for
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cs.DB2020★ 2 cited
Handling SQL Nulls with Two-Valued Logic
Leonid Libkin, Liat Peterfreund
The design of SQL is based on a three-valued logic (3VL), rather than the familiar Boolean logic. 3VL adds a truth value unknown to true and false to handle nulls. Viewed as indisp…
cs.DB2020
Grammars for Document Spanners
Liat Peterfreund
We propose a new grammar-based language for defining information-extractors from documents (text) that is built upon the well-studied framework of document spanners for extracting…