@conference {754888, title = {Implementing Embedded Valid Time Query Languages}, booktitle = {DEXA {\textquoteright}98: Proceedings of the 9th International Conference on Database and Expert Systems Applications}, year = {1998}, month = {8}, pages = {561{\textendash}572}, publisher = {Springer-Verlag}, organization = {Springer-Verlag}, address = {London, UK}, abstract = {Application development on top of database systems is heavily based on the existence of embedded and 4GL languages. However, the issue of designing and implementing embedded or 4GL temporal languages has not been addressed insofar. In this paper, we present a design approach for implementing an embedded temporal language that supports valid time. Furthermore, we introduce implementation techniques that can be used for implementing any embedded temporal language that supports valid time on top of a DBMS.}, isbn = {3-540-64950-6}, doi = {10.1007/BFb0054514}, author = {Costas Vassilakis and P. Georgiadis and Sellis, Timos K.} }