Merging the sysdb database (a dependency due to conversion from Oracle) into my SQL Server 2014 Express Database
In SQL Server, you can take advantage of the SCHEMA and SYNONYM, the former which are similar to Oracle's User (hence the sysdb database) and the latter lets you hide the actual object name from your application. See the documentation for SCHEMA and SYNONYM.

1) On your target DB, create the sysdb schema:

USE [TargetDB]
GO
CREATE SCHEMA [sysdb] AUTHORIZATION [dbo]


2) In your nonproduction environment, merge all the relevant procedures, tables, and any required object into this schema.


You can either use the SQL Server Import and Export Data utility or script it out yourself.


3) If you are unable to specify a schema in your application, create SYNONYMS for each object you require:

USE [TargetDB]
GO
CREATE SYNONYM dbo.usp_myproc FOR [TargetDB].sysdb.usp_myproc
GO
GRANT EXECUTE ON dbo.usp_myproc TO [USER]
GO


Qualification: you can only specify the current Database or tempdb (if the object is a temp table) and There might be some issues if there are duplicate objects in each schema, but otherwise this will work just fine. :)