Microsoft SQL Server Constraints

RDS for SQL Server only supports DB instances under the License Included model and does not support "bring your own license" (BYOL). After a DB instance is created, it contains the Microsoft SQL Server software license.

Table 1 shows the constraints designed to ensure the stability and security of RDS for SQL Server.

Microsoft SQL Server DB instances are classified into three types: single, primary/standby, and cluster. Different types support different functions.

**Table 1** Function constraints
Function Item	Single	Primary/Standby
Maximum number of databases	100 (can be increased)	100 (can be increased)
Number of database accounts	Unlimited	Unlimited
Creation of user, LOGIN, or database	Supported	Supported
Database-level DDL trigger	Supported	Supported
Database permission authorization	Supported	Supported
KILL permission	Supported	Supported
SQL Profiler	Supported	Supported
Tuning Adviser	Supported	Supported
Change Data Capture (CDC)	Supported	Supported
Change tracking	Supported	Supported
Windows domain account login	Supported	Supported
SQL Server Integration Services (SSIS)	Not supported	Not supported
SQL Server Analysis Services (SSAS)	Not supported	Not supported
R Services	Not supported	Not supported
Asynchronous communication	Not supported	Not supported
Replication subscription	Not supported	Not supported
Policy management	Not supported	Not supported