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I am a 3 year experienced software developer with fairly good TSQL knowledge in SQL Server. I am looking for expanding skill to Oracle also. What all things I should learn to say confidently thaty 'I know Oracle'?
Any free online certification available?
Pease share your thoughts..
Thanks
Lijo
Assuming you want to expand your Oracle application development skills (and not your DBA skills) you could look at gaining the 1Z0-047 Oracle Database SQL Expert certification. A good study guide for this is OCA Oracle Database SQL Expert Exam Guide: Exam 1Z0-047. I used this in combination with the Oracle 11g SQL Reference to pass 1Z0-047.
Working with Oracle in production for a couple of years will also help you to expand your Oracle skills.
As an introduction to essential Oracle concepts and techniques have a look at Expert Oracle Database Architecture: 9i and 10g Programming Techniques and Solutions by Tom Kyte.
As to "free online certifications", I'd not bother with those (if any).
They have no value, are impossible to verify that the person claiming to hold them actually does and are not recognised by pretty much anyone.
At best they could serve as practice for the real exams, at worst they'll give you a bad impression about your skills (as they may well have bad questions requiring factually incorrect answers).
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I'm developing a RDF database to be stored in a triple store. Visually editing the ontology is done with Protégé. However I need non-developers to be able to add records to the database.
I looked around but didn't have something that is as user-friendly as phpMyAdmin for a normal MySQL DB as an example.
Do I need to develop a visual interface for SPARQL? Or did I miss something that would allow a non-CS person to modify the records (individuals/instances not the ontology) in a graphical manner?
Update:
The best solution I found so far is to use a Semantic Media Wiki (http://semantic-mediawiki.org/) with Karima Rafes' awesome extension (http://www.mediawiki.org/wiki/Extension:LinkedWiki). With this, you can have users that don't know anything about RDF/Semantic Web modify data through wiki Templates and then export to RDF.
But I'm sure there is something more suitable, still looking for it.
I finally found the perfect tool: OntoWiki (http://aksw.org/Projects/OntoWiki.html), it matches all the criteria listed in the question. It is supposed to be back-end (triplestore) independent, but installation guidelines are given for either Virtuoso or Mysql.
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When I was a student we studied Oracle Database 10g: SQL and PL/SQL textbooks. At that time I asked the lecturer if I can take lab files. And he told me that they are freely available at Oracle website. But now I can't find them. I mean a filled database. At that time it contained data about King, Kochar, De Haan etc and about their departments.
Any Oracle version would suit. 10g would be fine. And newer filed would be ok as well.
Thank you in advance.
you can install the sample schemas when you initially create the database or you can install them afterwards if the database already exists.
First you can try looking in $ORACLE_HOME/demo/schema/. The sample schema install scripts should be in there.
If you need to download them from Oracle, head to their website under the Downloads section for Oracle Database, and select the version and platform you are using currently. The example schemas are in the Oracle Database Examples zip file.
There should be similar instructions for each version, but the link to 11g is below.
Oracle® Database Sample Schemas 11g Release 2 (11.2)
http://docs.oracle.com/cd/E11882_01/server.112/e10831/installation.htm
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I have a new project working with an existing oracle database. I've always been a SQLServer guy, so first time with Oracle.
Any recommendations for a SQLServer Management Studio type app for Oracle?
I would start with Oracle SQL Developer. It's a client app so you can see your tables, run queries, etc. It's free, fast and will get you started.
(It's not as good as toad, of course)
toad
You can also use pl/sql developer: http://www.allroundautomations.com/plsqldev.html?gclid=CJLCqNrIz5kCFYQ-3godM3Pmug
I personally like Toad the best but I know many people who prefer SQL Developer. Definite pros and cons to both but like a lot of things it comes down to what you are used to. I haven't used the freeware version of Toad much but I've heard it's somewhat lacking. In my opinion, if you have money to spend go with Toad, if you are looking for something for free go with SQL Developer.
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Can anyone recommend some good resources that highlight the differences between Oracle and the AS/400 database?
I am trying to help someone with a lot of AS/400 experience implement an Oracle installation, and they need some guidance.
A book or online resource would be ideal.
I've done this a fair few times and the solutions out there really depend on the environment (enterprise / mission critical or development). The BEST way would be the Oracle AS/400 Gateway. Here are some important links in that area:
Allow AS/400 apps to access oracle with the Oracle Access Manager:
Installation Guide for the AS/400 Oracle Access Manager
Allow your Oracle apps to access AS/400 tables and be queried using Oracle:
Oracle Transparent Gateway for DB/2
^^^Those products are fairly expensive but super powerful.^^^
Alternately, here are some more academic approaches to the situation:
Here's a technical comparison of the two technologies... It's a little propagandaish*.
Technical comparisons of Oracle and DB/2
Here's a document written from the opposite point of view - Someone moving from Oracle to DB2. I still find it's useful information:
Leverage your Oracle 10g skills to learn DB2...
And another IBM link that has some really great information all around:
IBM Developer Network Search Results
Hope this helps!
*Yes, I know propagandaish is not a real word.
These links are not AS/400 specific, but generally a good place starting with Oracle:
http://tahiti.oracle.com
http://asktom.oracle.com
Simple Talk Publishing have just set up http://www.oracleoverflow.com/, which is a dedicated Stack Exchange site. You could try posting your questions there?
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I currently work with an Oracle database and we use stored procedures for all our SQL queries. The problem I have is that we do not really having a coding standard for our packages. So what happens is that every developer has a different style (or in some cases no sense of style) in how they format there packages. Making them difficult to read and work on with out first reformatting. We all pretty much just use Notepad or Notepad2 to write our packages.
I am unfortunately not in a position to mandate a coding standard and enforce it (just a code monkey at this point) so I was hoping to find a free SQL code formatter that I can use myself, and possibly suggest to others on the team to use, to make my life easier.
I have considered writing a small application that would essentially take a file as input and reformat everything, but before I did this I figured I would ask if anyone new of such a tool that is already available and is free.
So does anyone now of any such tools available?
There is a free one online sqlformatter, also SQLinForm, personally i use TOAD and have done since before it was bought by Quest (10 years?)
VIM script
Aqua Data studio $ I use this one all the time.
I like TOAD for Oracle. It has a format feature that's decent. I see there's a freeware version, though I have not used it.
Toad for Oracle
nicest, most mature
$$$
http://www.toadsoft.com
Toad for Oracle, free version
free
this will do what you want
limitations are related to number of connections, size of data mods, etc.
http://www.toadsoft.com
Oracle SQL Developer (up and coming, free!)
free
from Oracle
cross platform
http://www.oracle.com/technology/products/database/sql_developer
I had the exact same experience from Day One working with Oracle stored procedures - "I have to use NOTEPAD?! Oh HELL no."
So I hopped on the internets and what I found were people saying "Hey, I have to create stored procedures in Oracle, isn't there anything better than NOTEPAD?!"
And the canonical answer was: "Download TOAD, you'll be glad you did". So I followed their advice, was very happy with it, and I'm pleased (if a bit amazed) to see it is still a popular answer.