SQL server 2014 is not currently supported.
For information on disabling the database version check, refer to the Appendix A: Troubleshooting the ALM Installation in the Installation and Upgrade Guide. The information is under the topic "Disabling Validation Checks for the Installation Wizard".
The following post also discusses this topic, though not specifically for SQL 2014 or ALM 12.
http://h30499.www3.hp.com/t5/Quality-Center-Support-and-News/QC-11-52-on-Microsoft-SQL-Server-2012-database/m-p/6431916#M85200
For information on disabling the database version check, refer to the Appendix A: Troubleshooting the ALM Installation in the Installation and Upgrade Guide. The information is under the topic "Disabling Validation Checks for the Installation Wizard".
The following post also discusses this topic, though not specifically for SQL 2014 or ALM 12.
http://h30499.www3.hp.com/t5/Quality-Center-Support-and-News/QC-11-52-on-Microsoft-SQL-Server-2012-database/m-p/6431916#M85200
