Comments on: Introducing Web SQL Databases

By: Jumaru

Jumaru — Wed, 07 Mar 2012 01:19:54 +0000

I'm a little confused about one thing. Since the executeSql runs asynchronously wouldn't that mean that running:


tx.executeSql('CREATE TABLE IF NOT EXISTS foo (id unique, text)');
  tx.executeSql('INSERT INTO foo (id, text) VALUES (1, "synergies")');

will produce unexpected results if the insert runs before the create table runs??? Should you not do it something along these lines?:


tx.executeSql('CREATE TABLE IF NOT EXISTS foo (id unique, text)',[],function(result){
tx.executeSql('INSERT INTO foo (id, text) VALUES (1, "synergies")');
});

By: onlywebpro

onlywebpro — Sun, 04 Mar 2012 09:08:28 +0000

Developer is advised to use IndexedDB for the coming web application development.

By: onlywebpro

onlywebpro — Sun, 04 Mar 2012 09:06:39 +0000

On November 18, 2010, the W3C announced that Web SQL database is a deprecated specification. This is a recommendation for web developers to no longer use the technology as effectively the spec will receive no new updates and browser vendors aren’t encouraged to support this technology.

Regards,

The Management of onlyWebPro.com

By: Ray Browning

Ray Browning — Wed, 22 Feb 2012 19:20:22 +0000

The whole idea of WebDB is to have it persist. I am not sure why your database would just go away. We use the following code and it seems to work. Are you sure your browser supports it?

if (localDB==null)
{
var shortName = ‘MyDB’;
var version = ’1.0′;
var displayName = ‘MyDatabase’;
var maxSize = 65536; // in bytes
localDB = window.openDatabase(shortName, version, displayName, maxSize);
}

if (!window.openDatabase)
{
DisplayMyError(“The browser you are using does not support this. Google Chrome is recommended.”);
}
else
{
ProcessSomeData();
}

By: DS

DS — Thu, 26 Jan 2012 11:49:00 +0000

Can someone please guide me as to, is the data stored in a web sql database persistent?

I created a database and then added some records to it. I cannot access the database via any other page which justifies the “same origin” concept.

But what if I need to access the database again to extract data how do I go about that? I mean from another page..

Please help. Thank you

By: osc2nuke

osc2nuke — Mon, 21 Nov 2011 23:04:51 +0000

i want everyone who stick to webdb, provide with this excelent javascript to insert .sql files: http://html5sql.com/index.html in a webdb enviroment

By: Nad

Nad — Mon, 21 Nov 2011 16:36:52 +0000

I have tried using web sql databases. In my code, i make opendatabase call at the time of user login. And when user proceeds il make some data inserts to this db and noticed that data is being saved. If the user logs out and logs in again, i noticed the db to be created again, resulting in a loss of data, that was previously stored. What can be the reason for that?

By: Ray Browning

Ray Browning — Mon, 14 Nov 2011 11:52:15 +0000

>Hi,
>I was wondering about security issues, like I could easily go >through your SQL code. What are the different ways SQL code can >be protected so that its not that easily accessible.
>One thing I could think off is encryption but just wanted your point >of view.
Probably the best thing to do is to limit data on the SQL side using views and security.

By: gaurav v bagga

gaurav v bagga — Sun, 13 Nov 2011 17:45:43 +0000

Hi,
I was wondering about security issues, like I could easily go through your SQL code. What are the different ways SQL code can be protected so that its not that easily accessible.
One thing I could think off is encryption but just wanted your point of view.

By: Prats

Prats — Fri, 14 Oct 2011 07:02:20 +0000

yes…