ifference between revisions of "EMO:The File Menu"
| Line 11: | Line 11: | ||
=== Data Source Concepts === | === Data Source Concepts === | ||
| − | Input data can be sourced from file (see | + | Input data can be sourced from file (see '''[[EMO:Data_Storage_Directory_Structure#Data_Files|Data Files]]'''), or from online database servers. |
| + | |||
| + | ==== The Database Connection Configuration ==== | ||
| + | ''EMarketOffer'' supports multiple connections to multiple database servers. Database connectivity is managed through the Database Connection Configuration (DCC). A DCC contains a number of queries which obtain data from one or more databases. While a DCC's queries can access data in more than one database on more than one database server, it is not possible to have more than one query handling data of the same type (e.g. only one query can return Price data, and only one query can return Demand data). To overcome this limitation it is possible to define multiple DCCs. Each configuration will define a different, but complete set of data access queries. ''EMarketOffer'' can use only one DCC at a time, which together with the data files loaded from the '''''Inputs files directory''''', fully determine ''EMarketOffer's'' run-time data environment. | ||
Revision as of 15:31, 11 January 2013
The File Menu provides access to the following EMarketOffer features:
- Data Sources
- Map Settings
- Save All Settings
- Open EMO Data Directory
- Exit
The Data Sources Option
Please read in conjunction with the section on Connecting to a Database Server.
Data Source Concepts
Input data can be sourced from file (see Data Files), or from online database servers.
The Database Connection Configuration
EMarketOffer supports multiple connections to multiple database servers. Database connectivity is managed through the Database Connection Configuration (DCC). A DCC contains a number of queries which obtain data from one or more databases. While a DCC's queries can access data in more than one database on more than one database server, it is not possible to have more than one query handling data of the same type (e.g. only one query can return Price data, and only one query can return Demand data). To overcome this limitation it is possible to define multiple DCCs. Each configuration will define a different, but complete set of data access queries. EMarketOffer can use only one DCC at a time, which together with the data files loaded from the Inputs files directory, fully determine EMarketOffer's run-time data environment.