Milpitas, Calif. -- SanDisk, the Milpitas-based developer of flash memory storage products, said on Tuesday it has acquired Sunnyvale-based Schooner Information Technology, a developer of flash-optimized database and data store tools. Financial terms of the deal were not disclosed. SanDisk said the acquisition complements its portfolio of enterprise solid state disk (SSD) and flash-optimized software offerings. Schooner's employees have joined SanDisk's Enterprise Storage Solutions (ESS) team. "Schooner represents another step in SanDisk's expansion in the enterprise space," said Greg Goelz, vice president and general manager of SanDisk's ESS division.