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Closed 10 years ago.
What's your favorite open source database design/modeling tool?
I'm looking for one that supports several databases, especially Firebird SQL but I can't find one on Google.
I've used DBDesigner before. It is an open source tool. You might check that out. Not sure if it fits your needs.
Best of luck!
Do you mean design as in 'graphic representation of tables' or just plain old 'engineering kind of design'. If it's the latter, use FlameRobin, version 0.9.0 has just been released.
If it's the former, then use DBDesigner. Yup, that uses Java.
Or maybe you meant something more like MS Access. Then Kexi should be right for you.
S.Lott inserted a comment, but it should be an answer: see the same question.
EDIT
Since it wasn't as obvious as I intended it to be, here follows a verbatim copy of S.Lott's answer in the other question:
I'm a big fan of ARGO UML from Tigris.org. Draws nice pictures
using standard UML notation. It does some code generation, but mostly
Java classes, which isn't SQL DDL, so that may not be close enough to
what you want to do.
You can look at the Data Modelling Tools list and see if anything
there is better than Argo UML. Many of the items on this list are
free or cheap.
Also, if you're using Eclipse or NetBeans, there are many
design plug-ins, some of which may have the features you're looking
for.
The DB Designer Fork project claims that it can generate FireBird sql scripts.
I like Clay Eclipse plugin. I've only used it with MySQL, but it claims Firebird support.
You may want to look at IBExpert Personal Edition. While not open source, this is a very good tool for designing, building, and administering Firebird and InterBase databases.
The Personal Edition is free, but some of the more advanced features are not available. Still, even without the slick extras, the free version is very powerful.
Related
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Closed 10 years ago.
I would like to learn Database systems implementation in Depth. Is there an open-source simple implementation of database for educational purpose that I can go through the code? Like there are a lot of OS implementation (Minix, Pintos...). I am wondering if there are similar systems for database education as well.
I read a few textbooks and they are mainly focus on theory and concepts.
Thanks a lot!
Alfred
Then find some educational material :)
When i was learning db concept, my professor ask us to code a simple dbms. One important reference is the Redbase:
http://infolab.stanford.edu/~widom/cs346/
Hope that helps.
MySQL, PostgreSQL, SQlite are all opensource. You can find their source code and related documentation.
Also check NoSQL group of databases.
What makes you think implementing a database is simple?
What parts of the database interest you? Storage management? Indexing? Query Language? Query Planning? Transactions?
Modern (even "toy") Relational systems have all of those components, which makes them rather complex from the outset. Other DBs, such dbm based databases are much simpler. Then you have things like Lucene, which is a database for documents and free form text -- conceptually simple but put a lot of effort in to scaling.
You can look at implementations of SPARQL if you're curious about query languages, as they work against RDF triple stores (which aren't super complicated).
There's also things like Prevlayer, which is an in memory database using a concept called prevalence. Probably the simplest of all of them, really when you get down to it.
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Closed 9 years ago.
Is there a tool which can look at your T-SQL and suggest hints for better performance? For example it finds usage of SARGs and converts a query into one without use of a sarg. Or pinpointing inefficient use of joins.
I am looking for tools beyond the Database Engine Tuning Advisor & use of the Profiler. For example I am currently checking out Toad for SQL Server which has some optimization features.
Addition:
Toad has an optimizer where it creates different queries or scenarios for my query and evaluates the cost of each query but its suggestions are primitive & simple. It's in the right direction but hopefully the optimizer gets a lot more smarter over time and be more useful.
While it won't cook breakfast nor repair your automobile, the LessThanDot SqlCop can highlight some wayward database code and objects which have an effect on performance. It is a best practices analyzer that is more application-oriented than the Microsoft Best Practices Analyzer (which is more DBA-oriented). The price is nice for both of them (free).
Check them out for yourself...
LessThanDot SqlCop
MS Best Practices Analyzer
There are a couple of static analysis tools for T-SQL which can identify the types of problems you're interested in detecting, although they will not suggest detailed fixes.
SQL Enlight offers 80+ pre-defined static analysis rules plus the ability to define your own - it will run as an SSMS plugin and a command-line tool. There's also a limited version on the website.
The Visual Studio editions which include the database tools also include fewer (20 or so) static analysis rules for T-SQL. Using it requires importing your code into a VS database project.
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Closed 10 years ago.
So I am working on a mini-project for the summer to keep my coding skills sharp. I will be using the Qt4 and C++ to make a classroom management system for college professors. I just came up with the idea like 10 minutes ago so I don't have much.
One question I have is what is the best way to store student/class/assignment information so that the software could still be portable and used my different schools.
My first guess would be a MySQL database. I need a gurus opinion on this one though.
Since different sites have different database preferences you might wish to use a layer such as ActiveRecord or PDO or ODBC to abstract out the specific database that your end users want to use. This would allow people to deploy onto PostgreSQL or MySQL or whatever they prefer.
A good choice for single-process server systems could be SQLite3. It's not suitable for all systems, but if your system is designed to scale to a few dozen users at most, it'll probably work fine. (The amount of work you'd need to put into a server to make SQLite3 scale into the hundreds or thousands might argue for planning for a database server environment instead.)
http://www.sqlite.org/
might be a good option. It is embeddable so you don't need a specific database instance running wherever you deploy it
also, http://www.microsoft.com/sqlserver/2005/en/us/compact.aspx is an option
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Closed 11 years ago.
I am referring to a truly visual environment, and not something that claims to be visual but requires mountains of hand-coded script, or a code generator that farts out a Web site and leaves you to start editing in Visual Studio. Are there any truly visual Web dev platforms out there?
You might try FrontPage or something, but you would probably be better served becoming more comfortable with the code, or hiring a web developer to do it for you.
Clarion products from Softvelocity are great round trip code generators. They have tools for ASP, PHP, and ASP.NET. I have only used their win32 tools with great results. Their tools are a bit pricey but well worth them in the long run.
You might try an online forms-building service, such as Wufoo.
You might want to try something like Microsoft Expression Studio which for its capabilities seems to also be somewhat lightweight. I have the Web 2 edition installed and it works rather well.
As Servio said above (can't Vote Up or Comment yet), but with some more info.
Clarion 6 + Nettalk provides template-driven rapid application development. You can create browse/form web systems very quickly.
I'm the Clarion Evangelist (Clarion Folk), so take this with a grain of salt.
Have just realised there are no decent videos up showing Clarion 6 + Nettalk. Will remedy that shortly.
Cheers
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Closed 10 years ago.
What's the widest overview and where are the deepest analysis of different replication methods and problems?
I would start here: wikipedia's replication article, then read a couple of related papers on general replication techniques such as the replicated distributed state machine approach (Paxos (pdf)) and epidemic replication (Google 'Epidemic Algorithms for Replicated Database Maintenance').
For a practical overview, perhaps consider investigating the source code for Postgresql, which seems to have some replication technologies built in. This presentation purports to have some details.
However, given that you're talking about deep analysis, the best approach is to make sure that you have a very sound understanding of fundamental distributed database systems issues. My copy of Date's Introduction to Database Systems has a few pages on distributed databases and their attendant issues. I should think a textbook dedicated to distributed databases would have much more detail - this one, for example, looks promising.
You can go much deeper if you read Ken Birman's work on Virtual Synchrony, and most things that Leslie Lamport has ever written. These will attack the problem from the perspective of a general distributed systems approach.
Good luck!
In my opinion, you should pick a mainstream database (such as Oracle) and study everything it offers and go from there.
Oracle offers:
Replication
Data guard (standby database and beyond- physical, logical)
Real Application Clusters - (multiple instances, one DB)
and more !
A bit of hands-on would not hurt so you can download a PC version and try various replication approaches on one PC!
Enjoy !
Though it is MS-SQL specific, you should have a look at "Pro SQL SERVER 2005 Replication" (Sujoy P. PAUL, Apress). I owe this guy many quiet nights... I guess you can find some extracts of this book as PDF files.
Wikipedia has some overview on the matter:
http://en.wikipedia.org/wiki/Multi-master_replication
http://en.wikipedia.org/wiki/Lazy_replication