sentences:  SQL CE is optimized for an architecture where all applications share the same memory pool.Windows Store apps for Windows 8 cannot use SQL Server Compact edition, or any other edition of SQL Server.Versions
  SQL CE databases can support ACID-compliance, but do not meet the durability requirement by default because AutoFlush buffers changes in memory (including enlisted ambient transactions and explicit SQL CE transactions that do not override the Commit() call with an CommitMode.Immediate value).