SAP will acquire database vendor Sybase Inc. for $5.8 billion in cash, a 44 percent premium in the company’s closing price Wednesday. The blockbuster deal will give SAP access to a variety of Sybase’s technologies including its column-based analytical database architecture, complex-event processing engine and middleware for linking enterprise data to multiple mobile device platforms and operators. Sybase says it has 4 billion mobile messaging subscribers through relationships with 850 various providers. SAP said it plans to maintain the Sybase brand and run it as a subsidiary. SAP said it will be able to marry Sybase’s complex event processing technology...