EMO:The File Menu

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.

The Database Connection

A Database Connection is a set of data that describes the addressing, technical and security details required to a specific database on a specific database server. The details are combined in to a specific string format and used to access the required data. A DCC must contain one connection string for every database to be addressed in the configuration.

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NOTE: Only one Connection per server is required in DCC. Therefore if all your data is stored in the same database then all queries required to access data can use the same Connection.

Source Data Administration Window

Access

The Data Sources option in the Main Window File Menu.

Purpose

To manage Database Connection Configurations (DCC).

Features

Feature	Purpose
Database Connections Configuration Selector	To set the Current DCC from a drop down box of all currently available DCCs.
Open configuration Button	Opens the DCC Window for the selected configuration
New Configuration Button	Opens the New DCC Window Dialogue
Use Grid File Inputs Check Box	When checked (default) EMarketOffer processes Transmission System files in the Inputs/Grid sub-folder
Grid File Inputs Status Button	Opens the Grid File Inputs Status Window to show which Transmission Systems files are currently being used and any associated loading errors
Refresh All Cached Data Button	Reloads all cached data (from file and database)

The Grid File Inputs Station Window

Purpose

Details the files currently being used to load Constraints data and any associated loading errors. The Window can also be used to access and reload external grid files.

Components and Features

Component	Feature	Purpose
Control Panel	Reset Grid Inputs Button	Reloads the Constraints data files (allows you to load modified or replaced Transmission System files without having to restart EMarketOffer)
	Open Grid Files Input Directory Button	Opens a standard Windows file directory window \Inputs\Grid for quick access to Transmission System files
Status Panel	External File Types Loaded List	Lists type of external transmission systems files loaded (in the above example the EM6 Constraints Change file type has been loaded)
	Loading Error List	List the types of errors found when attempting to load files line by line. Errors are listed by re-ratings or Group Constraint groupings a total of each is provided. Errors text for each loading failure are designed to be self-explanatory
	Setup Error List	Lists the errors when attempting to create a consistent set of Constraints after each line has been loaded

Database Connection Settings Window

Access

Either through the Open Configuration Button or the New Configuration Button, both on the External Data Administration Window.

Purpose

Specification of the database connection and query details used by a Database Connectivity Configuration (DCC).