Add XML documentation.

Cicm.Database/IDbCore.cs

@@ -27,22 +27,51 @@
 // ----------------------------------------------------------------------------
 // Copyright © 2003-2018 Natalia Portillo
 *******************************************************************************/
+
 using System.Data;
 
 namespace Cicm.Database
 {
+    /// <summary>Interface to database</summary>
     public interface IDbCore
     {
+        /// <summary>Database operations</summary>
         Operations Operations { get; }
 
+        /// <summary>Last inserted row's ID</summary>
         long LastInsertRowId { get; }
 
+        /// <summary>
+        ///     Opens an existing database
+        /// </summary>
+        /// <param name="server">Server</param>
+        /// <param name="user">User</param>
+        /// <param name="database">Database name</param>
+        /// <param name="password">Password</param>
+        /// <param name="port">Port</param>
+        /// <returns><c>true</c> if database opened correctly, <c>false</c> otherwise</returns>
         bool OpenDb(string server, string user, string database, string password, ushort port);
 
+        /// <summary>
+        ///     Closes the database
+        /// </summary>
         void CloseDb();
 
+        /// <summary>
+        ///     Creates a new database
+        /// </summary>
+        /// <param name="server">Server</param>
+        /// <param name="user">User</param>
+        /// <param name="database">Database name</param>
+        /// <param name="password">Password</param>
+        /// <param name="port">Port</param>
+        /// <returns><c>true</c> if database is created correctly, <c>false</c> otherwise</returns>
         bool CreateDb(string database, string server, string user, string password, ushort port);
 
+        /// <summary>
+        ///     Gets a data adapter for the opened database
+        /// </summary>
+        /// <returns>Data adapter</returns>
         IDbDataAdapter GetNewDataAdapter();
     }
 }