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0
votes
1answer
29 views

Planning on building a big web service. What kind of developers do I need? [on hold]

I'm a designer. I'm looking for web/mobile developers to help me build a similar platform like Airbnb or Yelp, but I don't know a lot about backend or on what technologies these two sites are built ...
0
votes
1answer
43 views

1 million strings and exact match search

I need to chose the best solution (software and algorithm) to solve my problem. I need to store up to million strings and data associated with them. Strings are search queries and data is cached ...
-1
votes
0answers
31 views

Split in and out for attendance machine system

I am using PHP and MySQL to create an attendance system. I have this table: +----+----+------------+-------+-------+-------+-------+-------+--------+ | id | pd | date | in1 | out1 | in2 | ...
0
votes
1answer
10 views

PHP/MongoDB: Unset all fields in a document

I want to use PHP to remove documents from a MongoDB collection, but it's a capped collection (and it's stuck that way until I can get more memory), which means I can't remove documents. I have to do ...
0
votes
0answers
26 views

Previously inserted rows disappear at call of PHP script

I am developing a server-side portion of a sport manager application using MySQL (5.1.67), with InnoDB as storage engine, and PHP (5.3.3). When I try to execute a script containing any kind of query ...
0
votes
1answer
32 views

Quickly etablishing if a remote MySQL connection is valid using PHP

I have a hosted website (Namecheap Pro shared hosting) that connects to a remote MySQL database using a read-only user privilege. This remote DB is updated by a separate system. The website works ...
0
votes
1answer
15 views

How does a tagging article database look like?

I have a article website and each article has some tags. How should be my database structure? This is my article table (article): article_id (key) | article_content | article_title | ...
0
votes
1answer
35 views

Searching through ~1M slow

I've never had a database with this many rows, so I can new to keeping the search time to a minimum. I have a database table with 1.5M rows. The primary key is an auto-increment id. Then there is ...
0
votes
0answers
27 views

Should I separate my preferences table?

I have a hobby site where users can find other hobbyists of similar interest. Each user can set a series of preferences that get saved into user_prefs. Right now there are 4 types of preferences, an ...
0
votes
1answer
17 views

Can I Create a Database and Tables in One SQL Command From PHP? [closed]

I tried separating the CREATE DATABASE and CREATE TABLES commands into different mysqli_query statements. The Database gets created but I get an error with: $create_tables = "CREATE TABLE ...
0
votes
1answer
35 views

How to query group for increase or decrease in value

In MySQl I have a table positions and I would like to find out if position of certain app for certain feed in a certain country type has been increasing/decreasing and by how much from the last ...
0
votes
1answer
44 views

Duplicate Entry Error with PHP When Trying UPDATE

I am checking if a record exists, creating a new record if it does not already exist, and updating otherwise. The SQL works fine in PHPMyAdmin but not through the PHP page. $check_for_id = ...
0
votes
1answer
24 views

MySQL/PHP Returning Blank Error Message [closed]

I am using the following code to delete a record. It works fine, but MySQL always returns a blank error message. PHP returns "Error: " instead of "1 Record Dropped". $eventid = ...
0
votes
0answers
21 views

Creating a registration page with PHP and PDO [migrated]

I need to create a registration page using PHP and PDO, and encrypt the password before storing it on the database table using md5 (adding 2 salts to the password). How can I write the script for ...
0
votes
1answer
67 views

Inserting data into multiple tables

For my system, students are required to create a user account by completing a registration form (personal, contact and course details; also username and password). I need to collect registration data ...
0
votes
2answers
38 views

Using a join to return multiple values of the same column?

I have two tables user Rank In the Rank table, I saved rank_id and supervisor_id. In the Rank table, I stored the rank name. The rank_id and supervisor_id are foreign keys from the Rank table. ...
0
votes
1answer
46 views

configure client ibm_db2 for php

I am installing a RHEL server with nginx and php that can connect to a db2 database, download and install the "IBM Data Server Client" package, also install the pecl library through: pecl install ...
3
votes
1answer
72 views

Percona MySQL 5.5 Unique key is duplicated

I'm totally out from ideas, so maybe somebody else could answer my question. We have a MySQL 5.5 server from Percona with high traffic. The application is in PHP and writes always to master. We have ...
0
votes
0answers
69 views

Having trouble configuring phpPgAdmin with PostgreSQL 9.3 on CentOS 6

Trying to hook up phpPgAdmin on my virtual box and having some issues with pg_hba.conf. I added the IP I SSH through, connecting through a VPN, in IPv4 and changed all the methods to md5. I then go to ...
1
vote
0answers
47 views

Question on MySQL insert race condition

I'm using MySQL 5.1, PHP 5.3 and the table is MyISAM. Here's the DTD of this very fake table: CREATE TABLE `temp1` ( `value` varchar(10) DEFAULT NULL ) ENGINE=MyISAM DEFAULT CHARSET=latin1 This ...
-2
votes
1answer
49 views

Can I install MySql and Oracle 10g both Databases in same machine? [closed]

I have MySql Installed in my windows 7 machine and PHP on IIS. Now i need Oracle 10g anyway.I'm having king of dilemma to install Oracle 10g. If i can do so please suggest necessary steps and ...
0
votes
0answers
34 views

Optimization mysql very slowly [duplicate]

Hello I have a server in kimsufi 2gb RAM and 500gb storage but the query with php mysql is very slowly I have change innodb buffer pool size to 500M but i have error too many connections, i add max ...
0
votes
0answers
23 views

Multiple client tables or large overall table

I've recently taken over a project linking to a large MySQL DB that was originally designed many years ago and need some help. Currently the DB has 5 tables per client that store their users ...
0
votes
1answer
33 views

How to install TokuDB on MAMP

I'm by no means a DB admin. Just a hobbyist actually, and more of a programmer than a database person. I have MAMP 3.05, PHP 5.5.10, Mac OSX 10.9.3. I have a big suite of PHP applications and a ...
0
votes
0answers
21 views

Garbage DB Objects Cleansing

How do I find in use db objects from all application pages is there any tool or trick I can use, just like we do search in Visual studio for an object in entire solution
1
vote
2answers
83 views

Checking if an Username is already in use

I am writing some scripts for my website, and I am currently focussing on checking if a username is already in use. I have tried writing a SELECT script where the datafield is selected and checks if ...
1
vote
1answer
55 views

Reviewing relational database tables

I am building a database, but I am a little bit confused with my table relationships. I wish someone could help review my table relationships below for me and tell me where I am going wrong. I have ...
0
votes
0answers
17 views

Checking for records in lookup table before deleting

In my MySQL database, I have products table, a locations table and a lookup table (called location_products) where the ID of the product and ID of the location are stored. I am creating a transaction ...
0
votes
0answers
16 views

Generate report from visitor counter

I have a visitor counter, the table looks like this: id | country_code | datetime | Browser | ... --------------------------------------------------------- 1 | FR | ...
0
votes
0answers
33 views

Low performance oci_execute

I work with a PHP application that connects to an Oracle database. Sometimes, the PHP executes a large query from a large database the page loads for ages (more than 200s). But I've seen something ...
0
votes
1answer
42 views

Implementing Permissions Database structure on a PHP site to restrict the Access in Multiple levels

I am working on a PHP site that shows the business of a Vehicle Showroom company in which we have 3 users as, Admin(Owner) = Here Admin Have all Access by default(View,Edit,Delete to all) Super ...
0
votes
0answers
22 views

Upgrading MySql 5.1 to MySql 5.5

I followed a tutorial to update My MySql 5.1 to 5.5 (actually i wanted to upgrade to 5.6, but the tutorial mentioned that i should upgrade to 5.5 first and then to 5.6). However, after removing ...
1
vote
1answer
49 views

Concurrency Issues when multiple users uses Portal (MySQL and PHP)

We have set up a portal using Yii Framework in Apache, PHP and MySQL. In the portal, there is a feature to export the data in dbf format, the extract takes around 7 minutes, but in those 7 minutes no ...
1
vote
2answers
39 views

Keywords - column or separate table

I am building a website on MySQL with php, and I have 400+ products in a table. I have three columns with comma separated values, each has 1-3 values separated by commas in each row. I was wondering ...
1
vote
1answer
747 views

Aborted connection (Got an error reading communication packets) MySQL on Amazon RDS

I'm getting the following warning in MySQL: Aborted connection (Got an error reading communication packets) I'm using Amazon RDS for MySQL hosting. Both MyISAM and InnoDB storage engines are ...
2
votes
1answer
40 views

Peer review database design for various reports

I'm currently trying to redesign a poorly thought out database for a peer review system that we use internally at my workplace. Employees can log on and submit a review about another employee who ...
0
votes
1answer
77 views

desing the database for survey app with various types of answers

I have to create a survey app for which answers should be stored in the database. I created an html form containing some questions (about 30) with various types of answers (check boxes, radio buttons, ...
0
votes
2answers
51 views

JOIN on three tables is not working

I have these three tables, user, categories and files In users, table I have a column user_id And I have this query that shows all Categories. SELECT `categories`.`category_id`, ...
1
vote
3answers
75 views

Mysql to Oracle communication

I have a website running with php and mysql on Centos(Amazon instance). The newly brought ERP(to be integrated with existing system) uses Oracle as db(located on a separate Windows Server). The orders ...
0
votes
0answers
16 views

Database design and Technology [closed]

Can someone point me in the right direction for this scenario as I am designing a website: Its a portal where people can save customer details in the cloud. Now i want my main website to allow them ...
0
votes
0answers
186 views

how to append or update JSON datatype value in postgreSQL

hey guys i'm using PHP's codeigniter to create my application and postgreSQL as database and i have to update some value in database. So, let's say we have table structure like this:- CREATE TABLE ...
0
votes
0answers
21 views

Intermittent Connection Speeds SQL Server 2008

We are having issues with a PHP-based application connecting to an SQL Server database on a separate server. It uses a single PHP page to establish the connection using mssql_connect, and this page ...
-1
votes
4answers
827 views

Host is not allowed to connect to MySQL

I have already uploaded some files in the free web host I chose and created a database there using phpMyAdmin v2.11.4 Also, I have Googled first this question before posting this here but I don't ...
1
vote
0answers
35 views

Host is not allowed to connect to MySQL [duplicate]

First of all I'm acknowledging you that I am a completely newbie in this field. The field I'm referring to is the summation of these things: Accessing files on different computers or over the ...
0
votes
0answers
59 views

Connection occasionally fails connecting to MySQL on Amazon RDS from PHP

We're moving MySQL databases from our own EC2 instance, to a multi-zone RDS instance. These are accessed from a load balanced lighttpd + PHP cluster. We've noticed that quite often, in the morning, ...
0
votes
2answers
70 views

JOIN on variable number of columns

I have the two tables courses AND something_about_courses: courses course_code course_session course_type something_about_courses course_code course_session some_description To ensure that I ...
0
votes
0answers
118 views

Mysql Insert taking too long. Table need optimzation

I have around 60 tables and a video table with over 600,000 rows. with 4 Btree and 2 FULLText Indexes and have around 30 Columns. Server Specs are high, over 30G of Ram, Intel Xeon Processor. Mysql ...
-2
votes
0answers
49 views

Can this architecture supports 350 concurrent access? [closed]

This question is more about server capacity issue. I have a linux server with Apache 2.24 installed (12G Ram, 32 cores CPU, Red Hat 64Bit). Install 11 instances of Wordpress, all 3.8.1, with WP ...
0
votes
1answer
83 views

Update table from calculated temporary table

I have two tables, one containing a set of user ID's, vote direction (-1 or 1) and ID of the object they voted on (casted votes table). In the other table, the object id, upvotes, downvotes and ...
0
votes
0answers
115 views

How to use Select query just right after Insert on master in a query.?

I have a question on mysql replication. As usual, I deployed my db structure like the Update on master db, the select on slave. My questions. If I use SELECT query just right after INSERT in a query, ...