```
public interface IFieldDatabaseProvider
```

Implement this interface to provide data for the [FieldDatabase](../../com.aspose.words/fielddatabase/) field when it's updated.

 **Examples:** 

Shows how to extract data from a database and insert it as a field into a document.

```

 Document doc = new Document();
 DocumentBuilder builder = new DocumentBuilder(doc);

 // This DATABASE field will run a query on a database, and display the result in a table.
 FieldDatabase field = (FieldDatabase) builder.insertField(FieldType.FIELD_DATABASE, true);
 field.setFileName(getDatabaseDir() + "Northwind.accdb");
 field.setConnection("DSN=MS Access Databases");
 field.setQuery("SELECT * FROM [Products]");

 Assert.assertEquals(MessageFormat.format(" DATABASE  \\d {0} \\c \"DSN=MS Access Databases\" \\s \"SELECT * FROM [Products]\"", getDatabaseDir().replace("\\", "\\\\") + "Northwind.accdb"),
         field.getFieldCode());

 // Insert another DATABASE field with a more complex query that sorts all products in descending order by gross sales.
 field = (FieldDatabase) builder.insertField(FieldType.FIELD_DATABASE, true);
 field.setFileName(getMyDir() + "Database\\Northwind.accdb");
 field.setConnection("DSN=MS Access Databases");
 field.setQuery("SELECT [Products].ProductName, FORMAT(SUM([Order Details].UnitPrice * (1 - [Order Details].Discount) * [Order Details].Quantity), 'Currency') AS GrossSales " +
         "FROM([Products] " +
         "LEFT JOIN[Order Details] ON[Products].[ProductID] = [Order Details].[ProductID]) " +
         "GROUP BY[Products].ProductName " +
         "ORDER BY SUM([Order Details].UnitPrice* (1 - [Order Details].Discount) * [Order Details].Quantity) DESC");

 // These properties have the same function as LIMIT and TOP clauses.
 // Configure them to display only rows 1 to 10 of the query result in the field's table.
 field.setFirstRecord("1");
 field.setLastRecord("10");

 // This property is the index of the format we want to use for our table. The list of table formats is in the "Table AutoFormat..." menu
 // that shows up when we create a DATABASE field in Microsoft Word. Index #10 corresponds to the "Colorful 3" format.
 field.setTableFormat("10");

 // The FormatAttribute property is a string representation of an integer which stores multiple flags.
 // We can patrially apply the format which the TableFormat property points to by setting different flags in this property.
 // The number we use is the sum of a combination of values corresponding to different aspects of the table style.
 // 63 represents 1 (borders) + 2 (shading) + 4 (font) + 8 (color) + 16 (autofit) + 32 (heading rows).
 field.setFormatAttributes("63");
 field.setInsertHeadings(true);
 field.setInsertOnceOnMailMerge(true);

 doc.updateFields();
 doc.save(getArtifactsDir() + "Field.DATABASE.docx");
 
```
## Methods

| Method | Description |
| --- | --- |
| [getQueryResult(String fileName, String connection, String query, FieldDatabase field)](#getQueryResult-java.lang.String-java.lang.String-java.lang.String-com.aspose.words.FieldDatabase) | Returns query result. |
### getQueryResult(String fileName, String connection, String query, FieldDatabase field) {#getQueryResult-java.lang.String-java.lang.String-java.lang.String-com.aspose.words.FieldDatabase}
```
public abstract FieldDatabaseDataTable getQueryResult(String fileName, String connection, String query, FieldDatabase field)
```


Returns query result.

 **Examples:** 

Shows how to extract data from a database and insert it as a field into a document.

```

 Document doc = new Document();
 DocumentBuilder builder = new DocumentBuilder(doc);

 // This DATABASE field will run a query on a database, and display the result in a table.
 FieldDatabase field = (FieldDatabase) builder.insertField(FieldType.FIELD_DATABASE, true);
 field.setFileName(getDatabaseDir() + "Northwind.accdb");
 field.setConnection("DSN=MS Access Databases");
 field.setQuery("SELECT * FROM [Products]");

 Assert.assertEquals(MessageFormat.format(" DATABASE  \\d {0} \\c \"DSN=MS Access Databases\" \\s \"SELECT * FROM [Products]\"", getDatabaseDir().replace("\\", "\\\\") + "Northwind.accdb"),
         field.getFieldCode());

 // Insert another DATABASE field with a more complex query that sorts all products in descending order by gross sales.
 field = (FieldDatabase) builder.insertField(FieldType.FIELD_DATABASE, true);
 field.setFileName(getMyDir() + "Database\\Northwind.accdb");
 field.setConnection("DSN=MS Access Databases");
 field.setQuery("SELECT [Products].ProductName, FORMAT(SUM([Order Details].UnitPrice * (1 - [Order Details].Discount) * [Order Details].Quantity), 'Currency') AS GrossSales " +
         "FROM([Products] " +
         "LEFT JOIN[Order Details] ON[Products].[ProductID] = [Order Details].[ProductID]) " +
         "GROUP BY[Products].ProductName " +
         "ORDER BY SUM([Order Details].UnitPrice* (1 - [Order Details].Discount) * [Order Details].Quantity) DESC");

 // These properties have the same function as LIMIT and TOP clauses.
 // Configure them to display only rows 1 to 10 of the query result in the field's table.
 field.setFirstRecord("1");
 field.setLastRecord("10");

 // This property is the index of the format we want to use for our table. The list of table formats is in the "Table AutoFormat..." menu
 // that shows up when we create a DATABASE field in Microsoft Word. Index #10 corresponds to the "Colorful 3" format.
 field.setTableFormat("10");

 // The FormatAttribute property is a string representation of an integer which stores multiple flags.
 // We can patrially apply the format which the TableFormat property points to by setting different flags in this property.
 // The number we use is the sum of a combination of values corresponding to different aspects of the table style.
 // 63 represents 1 (borders) + 2 (shading) + 4 (font) + 8 (color) + 16 (autofit) + 32 (heading rows).
 field.setFormatAttributes("63");
 field.setInsertHeadings(true);
 field.setInsertOnceOnMailMerge(true);

 doc.updateFields();
 doc.save(getArtifactsDir() + "Field.DATABASE.docx");
 
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| fileName | java.lang.String | The complete path and file name of the database specified in the \\d field switch. |
| connection | java.lang.String | The connection to the data specified in the \\c field switch. |
| query | java.lang.String | The set of SQL instructions that query the database specified in the \\s field switch. |
| field | [FieldDatabase](../../com.aspose.words/fielddatabase/) | The field being updated. |

**Returns:**
[FieldDatabaseDataTable](../../com.aspose.words/fielddatabasedatatable/) - The [FieldDatabaseDataTable](../../com.aspose.words/fielddatabasedatatable/) instance that should be used for the field's update.