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    <p>The Seq type has a neat function for handling database cursors called generate_using (see <a href="http://research.microsoft.com/fsharp/manual/FSharp.PowerPack/Microsoft.FSharp.Compatibility.Seq.html" rel="nofollow noreferrer">F# Manual</a> and the Data Access chapter in <a href="http://apress.com/book/view/9781590597576" rel="nofollow noreferrer">Foundations of F#</a>). This is a higher order function that takes one function to open the cursor and another (called repeatedly) to process records from the cursor. Here is some code that uses generate_using to execute a sql query:</p> <pre class="lang-fs prettyprint-override"><code>let openConnection (connectionName : string) = let connectionSetting = ConfigurationManager.ConnectionStrings.Item(connectionName) let connectionString = connectionSetting.ConnectionString let connection = new OracleConnection(connectionString) connection.Open() connection let generator&lt;'a&gt; (reader : IDataReader) = if reader.Read() then let t = typeof&lt;'a&gt; let props = t.GetProperties() let types = props |&gt; Seq.map (fun x -&gt; x.PropertyType) |&gt; Seq.to_array let cstr = t.GetConstructor(types) let values = Array.create reader.FieldCount (new obj()) reader.GetValues(values) |&gt; ignore let values = values |&gt; Array.map (fun x -&gt; match x with | :? DBNull -&gt; null | _ -&gt; x) Some (cstr.Invoke(values) :?&gt; 'a) else None let executeSqlReader&lt;'a&gt; (connectionName : string) (sql : string) : 'a list = let connection = openConnection connectionName let opener() = let command = connection.CreateCommand(CommandText = sql, CommandType = CommandType.Text) command.ExecuteReader() let result = Seq.to_list(Seq.generate_using opener generator) connection.Close() connection.Dispose() result </code></pre> <p>For example to list all the tables in an Oracle database we need to define a column definition type and invoke executeSqlReader as follows:</p> <pre class="lang-fs prettyprint-override"><code>type ColumnDefinition = { TableName : string; ColumnName : string; DataType : string; DataLength : decimal; } let tableList = executeSqlReader&lt;ColumnDefinition&gt; "MyDatabase" "SELECT t.table_name, column_name, data_type, data_length FROM USER_TABLES t, USER_TAB_COLUMNS c where t.TABLE_NAME = c.table_name order by t.table_name, c.COLUMN_NAME" </code></pre>
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    1. COOK. I'm still not totally comfortable with all the syntactic elements in that, but I follow the semantics and it answers my question. Thank you very much.
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      1. USPaul Nathan
    2. COI'd use the *use* keyword to dispose the connection instead of doing it manually.
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      1. USMauricio Scheffer
    3. COAfter time has passed, I still can't get the syntax to sort itself out.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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