Comparision between Quality Center and TestDirector

The following table highlights the main differences between TestDirector 8.0 and Quality Center 8.0.


Subject	TestDirector 8.0	Quality Center 8.0
Technology	C++ IIS COM	Back-end is Java based Runs on application servers
Operating Systems	Microsoft Windows	Microsoft Windows Red Hat Linux Solaris
Clustering	Single server only	Full clustering support
Database Connectivity	Requires database client installation ADO interface	Does not require database client installation Direct access to a database server using a JDBC type 4 driver
Repository	Domain repository (TD_Dir).	Repository divided into two subdirectories: QC directory for default and user-defined domains. SA directory for Site Administrator data
Virtual Directory	Virtual directory name is tdbin	Quality Center server virtual directory name is qcbin. Site Administrator server virtual directory name is sabin.
Supported Databases	Microsoft Access Microsoft SQL Oracle Sybase	Microsoft SQL Oracle
Site Administrator Data (domains, projects, and users)	Data stored in the doms.mdb file	Data stored in the Site Administrator schema on a database server
Common Settings	Data stored in the file system	Data stored in the database
User Authentication	Windows authentication	LDAP authentication