CloseSQLConnection[conn] disconnects the current connection associated with a data source.

DatabaseResourcesPath[] gives the list of directories that are searched to find database resources.

DataSourceNames[] returns a list of the names of data sources made available through DatabaseResourcesPath.

SQLConnections[] returns a list of the open SQLConnection objects.

SQLExpr[expr] allows a Mathematica expression to be stored in a database.

SQLResultSetColumnNames[rs] returns a list of {table, column} pairs for each column in a result set.

SQLResultSets[] returns a list of the open SQLResultSet objects.

SQLSchemaInformation[conn] returns information about the schemas available through an SQL connection.

ClosenessCentrality[g] finds the closeness centrality.

DaysPlus[{year, month, day}, n] gives the date n days after the date {year, month, day}.DaysPlus[{year, month, day, hour, minute, second}, n] gives the date n days after the ...