web-sql

I'm working on a bit of JavaScript that interacts with a client-side SQLite database, via the newish window.openDatabase(...) , database.transaction(...) and related APIs. As most of you know when you execute a query in this way it is an asynchronous call, which is typically good. You can make the call and handle the results as appropriate with callbacks. In my current situation I'm working on an algo for a client that does some hierarchy walking in the locally stored database. The part of the algo I'm having trouble with requires starting at some row, which has a reference to a "parent" (by

I want to change from WebSql to Indexeddb. However, how would one do SQL queries like SELECT * FROM customers WHERE ssn = '444-44-4444' and emal = 'bill@bill@company.com' SELECT * FROM customers WHERE ssn = '444-44-4444' and emal = 'bill@bill@company.com' and age = 30 SELECT * FROM customers WHERE ssn = '444-44-4444' and emal = 'bill@bill@company.com' and name = 'Bill' etc with IndexedDB ? For example, I noticed while reading the documentation of indexedDb, that all the examples only query one index at the time. So you can do var index = objectStore.index("ssn"); index.get("444-44-4444")

I'm starting the development of a web app with offline database storage requirements. Long story short, the app should be able to run on: One of the major desktop browsers, Chrome preferred Safari on iOS Android's native browser (based on V8 and WebKit) So the question is which technology to choose: IndexedDB or Web SQL Database? Regarding Web SQL Database, on one hand, it is ready to be used in any of the above scenarios. On the other, Mozilla has stated Firefox will never implement it, and acording to the HTML5 working draft the specification has reached an impasse: This specification has

I just read something about HTML 5 Web SQL Databases. I did a little search on here and Google but couldn't find a simple to the point answer. Can someone tell me, where is the data stored when using this? In memory or a text file or something else? Also what browsers support this? triangle_man It's stored in a SQLite database. Here is a browser support chart I found: . That said, the W3C has officially dropped support for WebSQL in favor of IndexedDB. Here's the equivalent chart for that: You may also want to look at DataJS , which is a library that abstracts some of the details of local

I'm looking to use a WebSQL to store data in an Android PhoneGap app but dunno where to start. There is no need to retrieve data from the web as the application is offline, and I want to have a prepopulated database that can be queried. A few questions: How do you create a pre-populated database? (what kind of file format should it be) If there are two factors can be changed, how do I get the result of a combination of these factors from the database using SQL. Will the database be wiped if the user clears app data from the Settings menu on an Android device? Grateful for any help. thanks Ved

I'm trying to figure this out but can't seem to on my own... I'm playing with Web SQL DBs and I can't get a loop to work properly with it. I use: for (var i=0; i<=numberofArticles-1; i++){ db.transaction(function (tx) { tx.executeSql('INSERT INTO LOGS (articleID) VALUES (?)', [i]); }); }; And I get only 5's.. I don't get the incremental i values. Can anyone suggestion what I'm doing wrong and what I should be thinking about? It looks like the function is asynchronous, and that by the time tx.executeSql fires, the loop have finished looping and i has been changed several times. You can solve

When my app stores data locally on a phone, how permanent is that storage? I'll elaborate the exact situation: I'm building an app with jQueryMobile and Phonegap. It's essentially a browser app, but using Phonegap lets me package it and sell it in the app stores, among other advantages. Phonegap offers two ways of storage, both of which functions harmonize native functions of iOs, Android, Blackberry and some other OSs: localStorage (which is primitive key-value pairs), and a Web SQL database. Both localStorage and web SQL are forms of storage that belong to the browser. Having said that, I