Determining what database product best fits the requirements and limitations in a specific situation. This is advice that generally requires much more insight into requirements than can easily be gleaned on a Q&A forum such as StackExchange.

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0
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4answers
427 views

Are there any in-memory hybrid databases available?

I am looking for a database that is - Relational (Not NoSQL). Has an in-memory store. Has disk-based backing storage. I want to set up a system where entire contents of the disk are replicated in ...
4
votes
1answer
464 views

NuoDB with Amazon S3

I think about developing my new mobile and web app against NuoDB. I believe in their technology. The thing that I care the most is backup and restore in case of data corruption and read / write speed ...
2
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0answers
381 views

SQL Server SSIS issue retrieve data when i enter into login of server side?

can any one try solve my problem here i am facing a problem Failed to retrieve data when i enter into login of server side here is the error message TITLE: Microsoft SQL Server Management Studio ...
2
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0answers
620 views

How to do automated archiving for a SQL Server database based on interpretation of database metadata?

I am looking for a solution giving me automated archiving of SQL Server databases based on a smart interpretation of table relationships that is able to archive records from related tables minimizing ...
3
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1answer
184 views

Which database?

We have to launch a new service in my company with a big database. And I currently don't have that much knowledge. We did a small preview of the service and our biggest table had more than 2 100 000 ...
2
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4answers
2k views

One table with many rows or many tables with a few rows

I'm having a question rounding my mind. It's better to create one table and store a lot of rows there or create various tables and have a few rows on them? What's the performance and the I/O saved at ...
1
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1answer
496 views

which database engine is best for full text search on a 10M rows table?

I'm creating a search engine and needs to search keywords in a text field (about 300 words in each text field, unstructured). I'm thinking about noSQL\MySQL+Sphinx, the performance impact here is ...
4
votes
2answers
697 views

Recommendations for building a big search engine

I am creating a image search engine that would probably have millions of images tagged with keywords. Basically it would be something like Google Image search. So I want to ask for any tips on ...
1
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1answer
310 views

Graph database with Erlang driver

I need a graph database system that has an Erlang driver. Can you advise which database system to use?
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5answers
7k views

What is the easiest way to get started using databases with real data?

I have a project that could benefit from using a database, but I have no experience with databases, don't have access to a server, and have relatively little experience working with things living ...
2
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4answers
828 views

Advice on choosing a really fast DBMS

I am working on a project that does real-time monitoring of data being transmitted, and logs if there are any of the various type of errors, etc. The CRUD operations are real-time. We initially ...
6
votes
1answer
526 views

Using an RDBMS for querying tens of Terabytes of time-series data?

I stumbled over an algorithmic / data-structures question over on SO, which I'll short quote: (...) opinions regarding best of breed data structures to be used for indexing time-series (aka ...
1
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2answers
897 views

Commercial database systems versus open source database systems [closed]

Can anyone tell me what are the reasons for buying a commercial database system and not using an open-source free version? The reason for my question is that: Commercial systems cost upwards of ...
1
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1answer
125 views

SQL database with temporal data

Is it possible to do this in a SQL database SELECT * FROM Employee WHERE BirthDate BETWEEN DATE 1970-01-01 AND DATE 1970-01-01 The result that was said to from this query is all the ...
2
votes
1answer
260 views

Postgres synchronized backup - what's with the archive?

I am setting up a Postgres 9.1 master and a hot standby-server. I read the documentation but I'm not quite sure yet what I should do with my WAL files. Every commit is done on both servers before ...
1
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3answers
92 views

Need suggestion for placing foreign keys in the databases

I have the database for customers. The customers table is something like this +------------------+ | Customers | +------------------+ | id (PK) | | business_email | | business_name ...
3
votes
2answers
1k views

What type of datastore should I use for high volume time series data?

Imagine a project which requires to be able to process 50,000+ (tiny ints) writes per second. The data, once inserted, won't change. The data is a measurement on a particular time. Sub second ...
2
votes
1answer
309 views

Using Foreign Keys in database

I am doing a small application for Invoice.In that the tables will be like this === invoice === id (pk) customer_id (fk) invoice_title invoice_issue_date due_date description created_by updated_by ...
9
votes
2answers
2k views

100 TeraBytes Capacity Database - Resources and Time Estimates

I am working on a 'back of the envelope' calculation for a 100TB reporting database setup. I am seeking out thoughts from the experts here. Proposed environment: Storage Capacity ~ 100TB Tables ~ ...
3
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3answers
119 views

~15 data sets w/ 25k rows & ~20 columns + quick one time reports = Access VS SQL?

I am working with around 10-15 datasets each containing around 25,000 rows and around 20 columns. Data is text in name/adress/desc and the rest numbers. I need to be able to calculate certain fields, ...
2
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1answer
204 views

Building a custom database in C with/without SQL? [closed]

Provide link or tutorials to build a custom database management in C. I am looking for Full Text Search options of about 10GB DB.
1
vote
1answer
855 views

MySQL Cluster over WAN: Best Architecture Options?

My company is looking at a multi-data-centre solution for high-availability, fun, and profit. We have businesses across the planet, with the need for MySQL database clustering solutions that can keep ...
1
vote
1answer
104 views

Right Distribution of Databases amongst Multiple Instances

So it's obvious that many times you'll have multiple instances (even if on the same server) to have a logical separation of databases for security purposes. But when does it make sense on the ...
9
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3answers
4k views

Database suggestion for a social network/ knowledge base community?

I am looking into various database types and DBMS's for a new project I am wanting to start in the summer. I have built systems in MySQL and postgreSQL , now I am wanting to expand my knowledge and ...
2
votes
1answer
433 views

How to prevent high memory, CPU and time consumption by MySQL restore?

I have a local test machine with 2 GB RAM and a dual core processor. I imported a dump on that using mysql -uuser -psecret < script.sql script.sql is a 700 MB file which contains a single ...
4
votes
3answers
704 views

How do I model data from arbitrary CSV's in a database?

I am setting up a web interface for data management. Users upload CSV or similarly structured files, and I want to store these in the database so they can do manipulations on them -- filtering, ...
4
votes
2answers
2k views

Ready-to-Use Database models example

Where can I find ready-to-use database models ? I don't need a database with data in it, but only schemas (UML diagrams). Perhaps something like the data models at this link, but much more complex ...
4
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1answer
464 views

Would appreciate some suggestions on how I should model this data

I am setting up a website that will have users. Users can search for songs and (if signed in) save them to a playlist or their library of songs. I want it to be like iTunes in that all the songs on ...
0
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1answer
967 views

Database design : multiple category of users login into same system

In our new system we have three type of people Business owner Assistant of business owner Staff (a skilled employee) I am having following entity [Business] - include detail about business ...
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4answers
1k views

RAM/memory based databases

I am looking for a RAM/memory based database, and these two seem to be interesting: SQLite Oracle Berkeley DB Do you have any other suggestions? I need more than one executable to be able to ...
2
votes
5answers
7k views

Small sample database for practicing database administration?

I'm looking for a portable sample database that can be created from a script has a simple ER model has little data for database administration practicing purposes. I know that there is e.g. ...
4
votes
1answer
3k views

What memory should be given to the variables of my.cnf ?

Installing a MySQL server is quite easy. However, after installing, configuring the server is an important task for a DBA. Having 2GB of RAM and 250GB of disk space, how should I tune MySQL server so ...
1
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1answer
121 views

Is maintaining a single database an issue when the underlying project becomes larger?

I have seen this related post but it was more focusing on the amount of consumers for the databases, which is not my only problem. I have a situation, where I am taking part of the design of a new ...
4
votes
2answers
2k views

Best way to build a server inventory db and web interface?

My team is looking to build a rich inventory of servers at our enterprise. We are trying to consolidate several different excel documents into one database. I found a great utility called AppGini ...
3
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2answers
171 views

Could someone recommend a db management tool that supports SQLite, MySQL, PostgreSQL, and is web-based?

Could someone recommend a db management tool that supports SQLite, MySQL, PostgreSQL, and is web-based? By 'web-based' I just mean it can be run in a browser locally or remotely.
4
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3answers
544 views

Should I use MongoDB or a NoSQL solution at all for this?

I apologize if this belongs in web applications or something. I'm creating a web application that is sort of a similar concept to github. Basically I plan to allow someone to create a design of ...
1
vote
4answers
286 views

Is there a DBMS that allows the “= NULL” syntax?

Inspired by a StackOverflow question (Why doesn't SQL support "= null" instead of "is null"?). Is there a DBMS that actually supports the = NULL syntax?
2
votes
1answer
648 views

Database Design: Storing Map Locations

When working on a game, I developed a database that used X/Y coordinates, roughly as: CREATE TABLE Map ( MapId INT IDENTITY PRIMARY KEY, X INT NOT NULL, Y INT NOT NULL, North INT ...
7
votes
2answers
5k views

Which DBMS is good for super-fast reads and a simple data structure?

I am developing a product that, as a part of it's operation, must track a large number of files/directories. The idea is to store stat information in a database then, on boot, create watches for each ...
2
votes
4answers
111 views

Is there a Storage-Engine/DB that logs all changes and allows selective rollback of specific changes?

Is there a storage-engine or database that naturally support this use-case: 1) Key-Value storage. Small Fixed Length Key, and value within [1KB, 64KB] 2) Access is read-mostly 3) Latency more ...
5
votes
2answers
1k views

Database Hardware and Software to handle million requests per second?

I'm curious about the necessary hardware and software requirements to support a strong MMORPG. For example, what kind of requirement (both hardware and software) would I need if I were to build a ...
0
votes
1answer
507 views

the best place for save binary file [duplicate]

Possible Duplicate: Files - in the database or not? anyone can tell me, what is the best place for save binary file? database or just in a file system? and what is plus and minus for both? ...
11
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4answers
4k views

Whether or not to create separate tables for different product types?

I'm in the process of designing a database and I'm having second thoughts about my initial design decisions... Product types are as follows... Models, parts, replacement part kits and options. ...
4
votes
1answer
335 views

Proper Database Partitioning

I had asked a previous question "Proper technique for storing users event data" and the correct answer in my opinion was to create a database partition. Now from what I have read on it there are ...
10
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2answers
934 views

Proper technique for storing users event data

I am mostly a self-taught when it comes to database designs. I am posing this question because I have settled on this common structure, but am wondering if it is the most efficient or 'industry ...
1
vote
1answer
111 views

Using different servers for front-end and back-end?

I recently noticed that the load time of my website has slowed significantly. I'm not a developer, but my programmer mentioned this is due to the large amount of data that is being searched through ...
2
votes
2answers
759 views

best db and file system for high volume, high qps

I'm looking at setting up a DB for a very high volume non-profit situation that also would benefit from high speed updates and searches. Each transaction record will be relatively small (basic ...
2
votes
3answers
681 views

Best database choice for a highly scalable web ticketing system?

Essentially, we are developing using Ruby on Rails and want to make a highly scalable ticketing system. Essentially we will have a small database (containing event details and tickets sold) that will ...
7
votes
3answers
1k views

Suggestion for Large SQL Server Database Design

We are creating a database in MSSQL 2008 R2 Standard where we will be storing a large number of records. We estimate 200 million+ records in one table annually and we are primarily INSERTing with very ...
2
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1answer
549 views

Which NoSQL database(s) should be used for advertising platform? [closed]

What NoSQL database or combination of databases best meets these criteria? Very fast writes and reads Persistent data that won't get lost in a crash Plays nice with PHP Works well in the cloud (EC2) ...