Due to its small size (1 MB DLL footprint), it has a markedly reduced feature set compared to the other editions. Unlike the other editions of SQL Server, the SQL CE engine is based on SQL Mobile (initially designed for use with hand-held devices) and does not share the same binaries. Compact (SQL CE), the compact edition is an embedded database engine.Azure SQL Database is the cloud-based version of Microsoft SQL Server, presented as a platform as a service offering on Microsoft Azure.
