| Feature |
SQL Server 2012 Express |
SQL Server 2012 Web |
SQL Server 2012 Standard |
| Maximum number of instances |
50 |
50 |
50 |
| Maximum number of processors |
Lesser of 1 socket or 4 cores |
Lesser of 4 sockets or 16 cores |
Lesser of 4 sockets or 16 cores |
| Maximum RAM |
1 GB |
64 GB |
64 GB |
| Maximum database size |
10 GB |
524 TB |
524 TB |
| High Availability - log shipping |
No |
Yes |
Yes |
| High Availability - database mirroring |
Witness only |
Witness only |
Yes (Safety Full only) |
| High Availability - failover clustering |
No |
No |
Yes (2 nodes) |
| Backup compression |
No |
No |
Yes |
| Replication publishing |
No |
No |
Yes |
| SQL Server Agent |
No |
Yes |
Yes |
| Database Tuning Advisor |
No |
Yes |
Yes |
| BI Features (Analysis Services, Integration Services) |
No |
No |
Yes |
| Report Server |
Express with Advanced Services only |
Yes |
Yes |
| Supported Report Server catalog DB |
Express |
Web |
Standard or higher |
| Supported Report data source |
Express |
Web |
All editions |
| Service Broker |
Client-only |
Client-only |
Yes |
| Full-text semantic search |
Express with Advanced Services only |
Yes |
Yes |
| SQL Profiler |
No |
No |
Yes |
| Database Mail |
No |
Yes |
Yes |
| StreamInsight |
No |
Yes |
Yes |