Tagged Questions

0
votes
0answers
31 views

Database with history journaling [closed]

In the database I need to store a data about vehicles (about 240 objects), their locations, working job, etc. In my table this info stored in one table. User should not input everyday this info. It ...
4
votes
1answer
91 views

How to determine if there are [idle connections with] uncommitted transactions in PostgreSQL?

According to a comment on this question I asked about idle connections in PostgreSQL 9.2, some uncommitted transactions (possibly related to some of those idle connections) might cause some ...
3
votes
1answer
77 views

Could too many idle connections affect PostgreSQL 9.2 performance?

Some queries on my database server seem to take a long time to respond, and I believe the CPU usage is high. When running ps aux, I see ~250 "idle" connections (which I believe to be too many). I ...
1
vote
1answer
30 views

Adding users to a list and sort by category?

I'm using SQL-Server 2012 and I would like to know how to solve this program. So: I want to create a page that allows admins to manage a project, and part of it, would be to add members/employees to ...
2
votes
0answers
56 views

How to execute a non-table-locking update operation on PostgreSQL? [closed]

Looking for a good way to update the value on a column for all the rows in a database (not huge, but big enough - about 10M records), without locking the whole table, so operations can continue while ...
3
votes
0answers
23 views

Does avg_query for PgBouncer include update and inserts?

Trying to tune our application and would like to know if the stats data that pgBouncer shows as avg_query, according to the PgBouncer docs on usage: avg_query Average query duration in ...
0
votes
0answers
36 views

MySQL Stored Procedure

I am developing a database for an eCommerce website, I have written the stored procedure for the following tables, user_master, authentication_master, country_master, public_master. I have ...
6
votes
1answer
85 views

What is a good way to determine the performance I should expect from a PostgreSQL server?

Trying to figure out how I should expect my database to perform. Basically, I need to determine when the server I have set up is reaching its performance limits - which would help me plan server ...
1
vote
3answers
146 views

Database Design Relationship for Patient Visit in MS Access

I am designing a database to store records for research purposes, and I am having trouble picturing how I can create a relational database based on the information I have. There are a total of 6 ...
4
votes
0answers
68 views

Does PgBouncer create a separate pool for every database config entry?

If I set up a pgbouncer.ini config file with several database entries, does pgBouncer create a separate pool for each one? I would think so, but have not been able to confirm this. For example, ...
4
votes
2answers
85 views

How to properly configure PostgreSQL RAM usage?

Using PostgreSQL, we have several hundred concurrent processes doing regular database access. We have our data spread out through several database servers, each of which houses a connection pool with ...
2
votes
0answers
72 views

How to properly configure pgBouncer transaction level pooling?

What is a good way to determine the number of available transaction connections when using pgBouncer to pool database connections? Also, how should I determine the number of max_connections and ...
1
vote
1answer
68 views

Public Database for Mobile Application

What are the proper steps to hosting a public database. Currently I a building a mobile application with Adobe Flash Builder. I have used Microsoft SQL Server, My SQL as well as WAMP Server. All of ...
1
vote
1answer
75 views

Database Designing for a Ecomerce website

I am new to database designing. I am designing a database for an eCommerce website, there is a lot of products to be updated, but while designing for product specification table I do not understand ...
1
vote
0answers
78 views

SSMS produces error if query returns too many rows

We are having an issue with a server that we linked to our sql server 2012 instance. The server that we linked through an odbc or oledb connection is Pervasive SQL. Selecting from the linked server ...
0
votes
1answer
192 views

Connecting to a SQL Server database from a Flash program

I currently have the ability to utilize Microsoft SQL Server 2012. I am developing a project with Adobe Flash Builder 4.7. If I link my database with Adobe Flash Builder is there any additional ...
2
votes
2answers
115 views

Database structure for a system with multisite

The system I'm working is structured as below. Given that I'm planning to use Joomla as the base. a(www.a.com),b(www.b.com),c(www.c.com) are search portals which allows user to to search for ...
3
votes
2answers
156 views

How can I organize my tables?

My database contains more than 200 tables. When I want to modify or insert a table, I find it difficult to find it among all those tables. Is there any way to collect related tables in a folder ...
-4
votes
1answer
97 views

Advice for designing a complex/multipart application [closed]

I'm designing a software application for my medical carrier. It is very complicated, with many parts and many small details. Some experts advised me to divide it to parts, then design the database ...
1
vote
1answer
147 views

mysql session logging tables

I've been building a session logging system for our sites. We get around ~15m hits a year and at the moment we're really only interested in stats about people who logon to our sites. Our table ...
0
votes
2answers
66 views

what is the best choice from those two tables?

what is the best choice from those tables?? table A : keep DB simple with lower number of tables ... but i will find difficulties if i wanted to extract certain data from column of doses coz it's ...
1
vote
1answer
100 views

a question in tables relations

Table A is linked to Table B , and Table B is linked to Table C using primary and foreign keys My questions: Should i link Table A to Table C too?? Or Table B can act as intermediate link between ...
1
vote
1answer
69 views

Tables of a huge database

When I work on a huge database, and after following normalization rules, I found that I have many tables for each part of my huge database. That makes me worry about the final number of tables, it ...
-1
votes
1answer
69 views

Can I make that connection?

If I have a column with data type varchar(max) in a table that contains a big piece of text, can I make a connection between a word or a sentence in that text with another word or a sentence in ...
0
votes
1answer
104 views

Patients profiles database

I am making software for patients in hospitals. I want to make an option that if a doctor has prescribed a drug that interacts with another drug that the patient already uses, a warning will appear ...
0
votes
0answers
439 views

oracle database project ideas [closed]

I have to prepare three project ideas for my final year undergraduate project module. I like to work with databases and i want any challenging database design and implementation with various ...
2
votes
1answer
697 views

What is the best database design for multi-language data?

I am designing a multi-language database for a piece of software with the following features: data used in every country differs from other countries data used in every country will be in 2 ...
1
vote
1answer
92 views

Regularly import tab-seperated log file to MySQL

I'm looking to keep arpwatch entries in a MySQL database to crossreference with other information I'm storing based on mac addresses. I've manually imported the arpwatch database into my mysql ...
2
votes
3answers
144 views

Merging tables with a 1 to 1 relationship in a database

Is it a good idea to merge two tables that have a 1..1 relationship together? I have inherited a database with too many tables linked together in a 1..1 relationship. I'd like to evaluate the ...
3
votes
3answers
114 views

Is this database fine for calculation?

I am doing an application called as Invoice Application.For that I have my database is like this. Now my problem comes when I am taking the tax part in my database.As I have made tax as an option ...
0
votes
2answers
230 views

Is there data visualisation tool for postgresql which is capable of displaying inter schema relations as well?

Operating system used is linux. I have tried Navicat and SQL Power Architect. They did display relations between tables in the same schema. I have some foreign key constraints which reference tables ...
0
votes
1answer
116 views

Database designed in facebook [closed]

I want to know which database is used in Facebook?How the database is designed to make virtual friend list in the database of a user?
2
votes
2answers
233 views

Help with Vehicle Service database

I am using the Desktop Vehicle Maintenance template in access, but i am trying to cater it towards our farms needs. We will be keeping track of the service's done on Trucks, Tractors, Equipment, etc. ...
2
votes
2answers
95 views

which option is better for not slow down the performance of queries?

I am developing a system that records customer payments, when a customer makes a payment, the system must update the account and show the payment made and all previous payments, is here when the ...
3
votes
2answers
255 views

What exactly is “pinning” in relation to indexes?

When one talks about "pinning" in indexes, what exactly is this? Is there some other word/term I can search for, as google has not provided any solutions. It is part of a test question, where ...
8
votes
2answers
1k views

Handling growing number of Tenants in Multi-tenant Database Architecture

Handling a modest number of customers (tenants) in a common server with separate databases for each tenant's instance of the application is relatively straightforward and is normally the correct way ...
2
votes
4answers
155 views

MySql Database solution for specific web app problem

Well, I need to create a comment system for posts that people add to my web app. This web app is just like facebook or myspace posts. Users add posts and people can comment on them. But the problem is ...
0
votes
0answers
69 views

Database Design Concern [closed]

Need to design a multi-tenant web application, using single application multiple database setup. ![Image][1] https://plus.google.com/photos/104702944930754413137/albums/5725683632435430785
0
votes
1answer
144 views

Do you feel like DBA/DBD Is a “secure Field” still? [closed]

I noticed recently alot of Database jobs/Development have kind been pushed onto general developers, not to mention with NoSQL Solutions (Which IMO are probably a little easier for Non-DBA's to throw ...
2
votes
2answers
451 views

Generalisation in databases

I am working on a Hospital Management project in DB2. I have one table for staff with a primary key of staff_id. The hospital has to have different staff... e.g doctors,nurses,e.t.c. Is it better to ...
4
votes
1answer
198 views

Speed inserts in database with a table with +47 million data per each year, containing more than 10 years?

I'm moving my database to mysql but there is one table that is pretty big (more than 47 million rows for each year) and it takes years to insert all the data. I already tried everything I found in ...
4
votes
2answers
418 views

Creating partitions on a production database

I have a production MySQL 5.1 database that is running well but I want to improve query performances. I have never used Partitions and just going through the manuals. I have two tables that involve a ...
2
votes
2answers
684 views

Unknown Db file format - best way to find out?

A client has given me the data he wants visualised in my project - but I don't know what DB format it's in. He's pretty unclear, also.. I have access to the table structures, but don't know how to ...
3
votes
3answers
814 views

Suggestion required for Large Database Optimization and performance

We are creating a large database with estimated growth rate 200 million+ records per annum. The database is use for analysis purpose and we will generate different tabular and graphical reports from ...
31
votes
11answers
2k views

How could DBAs be more 'programmer friendly'?

The answers and comments on the dba.se version and programmers.se version of the question "What are the arguments against or for putting application logic in the database layer?" are very revealing ...