摘要：In the software product lines(SPL), variability has been extensively studied to ensure the continuous evolution of the source code. This study still superficial and insufficient on the database side ofthe product lines.Accordingly,tool support for variability management has been gathering increasing momentum over the last few years and can be considered a key success factor for developing and maintaining database schemas. While several studies have already been conducted on variability management, none of these analyzed the available tool support in detail. Therefore, we worked on this research field to ensure a continuous evolution of database schemas through the modelling and the implementation of variability in these schemas.Thus, we proposed anapproach for modelling and implementing variability in database schemas in database product lines (VariaLBD). In this paper, we present a tool support for variability managing in database schemas. It is a web site which enables the automation of the VariaLBD approach that allows the modelling of variability in the different database schemas along its life cycle. Thus, this tool allows the automatic generation of a logical, relational, evolutive,and variable schema of a given database. We also present our results of applying tool support to a case study, a web Content Management System (CMS). In addition, we present a quantitative evaluation of our experimentation which leads to a validation of the latter to show the reliability of VariaLBD.
