# Using Database
HTML5 Web SQL Database connects to the device database. This section describes Web SQL Database usage.
## Web SQL Database
You need to create a new Database object before accessing to it. `window.openDatabase` function creates a new SQLite database.
```javascript
var db = window.openDatabase(database_name, database_version, database_displayname, database_size);
```
## Creating a Database (SQLite)
```markup
Web SQL Database
```
### openDatabase Arguments
| Arguments | Description | Value |
| ---------------------- | ------------------------ | -------------- |
| `database_name` | Database name | String |
| `database_version` | Database version | String |
| `database_displayname` | Database display name | String |
| `database_size` | Database size (in bytes) | Integer number |
### Database Object Methods
| Function | Description |
| --------------- | ----------------------------------------------- |
| `transaction` | Starts transaction. |
| `changeVersion` | Checks version and updates schema if necessary. |
`executesql` function in `SQLTransaction` object is an actual method to execute SQL. You need to execute `transaction` function in Database object to get `SQLTransaction` object. When executing `executeSql` function in `SQLTransaction` object, the callback function is executed and `SQLResultSet` object is passed to it.
### SQLResultSet Object Properties
| Property | Description |
| -------------- | ---------------------------------------------------------------------------------- |
| `insertId` | Returns row number when INSERT statement is successful. |
| `rowsAffected` | Returns affected rows after sql execution. |
| `rows` | Returns `ResultSetRowList` object. It represents the results of the sql execution. |
## Executing SQL (SQLite)
```markup
Execute the SQL
```
---
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