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).

Components and Features

Component	Feature	Purpose
Function Panel	Test Button	Tests the validity of the DCC. Test results are displayed in the Status Box (see below)
	Save Button	Saves the current set of configuration data to file. NOTE: Connection details changed through the interface will only remain effective for the current session. Unless saved using this button, future sessions will revert to the previously saved details.
	Done Button	Closes the Data Connections Window retaining any unsaved changes for the current session only.
	Date and Period Selector	Selects the Date and Trading Period for the data connectivity test.
	Status Box	Shows the results of the last connectivity test
Database Panel	Add Button	Creates a new Database Connection
	Delete Button	Delete an existing Database Connection
	Name Field	Contains the name of the Database Connection used to reference the connection in the Query Panel
	Connection Type Field	Determines the type of connection EMarketOffer will use for a specific connection. Currently supported connections are: OleDB ODBC Oracle SQL OleDB and ODBS are generic types and operate with most SQL compliant databases. The Oracle and SQL connection types are specific .net variants for the Oracle and Microsoft SQL server database type. They provide performance superior to the generic connection types and should be used by preference where possible.
	Connection String Field	Contains the Connection String required to access a database server
	Date Brackets Field	Contains the symbol used by database server to identify dates within query strings (varies by server type)
	Date Format Field	Defines how the database server interprets date formats
	Error Field	Displays results from the last test operation that are specific to this Database Connection
Query Panel