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Could anybody suggest me a visual tool for oracle database architecture. I have used mysql workbench for mysql server. I am trying to find out same kind of tool for oracle database.
If you mean tools that include a graphical query builder you should have a look at the following tools:
Toad (there is a freeware version, but I am not sure if it contains enough for you)
SQL Developer (free)
There are other options out there, but I would say that these two are by far the best ones you can get for oracle development.
If you meant tools to create a database (so a graphical tools that shows you a diagram of the database and generates SQL scripts from it) you should have a look at:
Toad Data Modeler
Dezign
SQL Developer Data Modeler
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I want to know is there any difference between Oracle and sql developer tools?
It depends on what you consider a 'tool.'
The database ships with a couple of command-line interfaces, SQLPlus and SQLcl. Those are both tools, they're not a part of the core database code.
You could also use web interfaces like SQL Developer Web, APEX, EM Express, or Enterprise Manager. Some of those ship with the Database, and EM Express runs out of the database, but those are kind of tools too.
You could write your own program to interact with the database, but you're going to use a JDBC driver or something that supports SQLNet...but then are those drivers, tools?
So my answer to you is, it depends on what you mean by 'tool.'
Can you use the database without SQL Developer, yes.
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I have two databases in two networks. I want to check one against another for to see table definition mismatches. I have database definition scripts of both databases. Is there any built-in function in SQL Server to achieve this.?
All the configurations in database servers are similar. The server version is SQL Server 12.0.2.
Update: I know there are text comparison tools, and I use beyond compare.
If you have the database definition scripts the easy way is to use diff on the UNIX (or Mac) command line, or windiff in Windows (see https://answers.microsoft.com/en-us/windows/forum/windows_10-files-winpc/does-windiff-exec-available-in-windows-10-64-bit/624fb262-7cba-49bd-b02e-74814a4d11b6?auth=1).
Otherwise you can use a database design tool. There are many available but they all cost a lot more than using diff.
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Is there any kind of program on oracle which helps you with typing?
For example there is SQL Prompt on MS SQL Server, and I want to know if there is something like this on PL/SQL Developer.
The Oracle ecosystem is slightly different in approach from MS SQL Server. Traditionally Oracle has offered a top-notch RDBMS but its supporting tools have been rather basic, with third-party vendors filling in the gap. This contrasts with the MS approach which offers tightly integrated environments for managing and developing against MSSQL.
So yes, PL/SQL Developer (the Allround Automations product) has code completion for PL/SQL and SQL elements. Quest TOAD has it too. Oracle came late to the IDE game but its Oracle SQL Developer product does code completion. Finally, the new Oracle SQL Command Line tool offers statement completion, which is another reason it is superior to the venerable SQL*Plus tool.
These are all separate tools, even the Oracle ones, until Oracle 12cR2 which does bundle SQLcl in the download.
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I'm a beginner level RDBMS student. I need to manage and test SQL commands on one database on my laptop (localhost).
I see 'Oracle Database Standard Edition 12c' (2.6 Gb) in the download section. So, is it free or does it need licensing?
Oracle has a version called Oracle Express which is, in fact, free.
You can download it from here: http://www.oracle.com/technetwork/database/database-technologies/express-edition/overview/index.html
From its webpage:
Oracle Database XE is a great starter database for:
Developers working on Node.js, Python, PHP, Java, .NET, XML, and Open
Source applications
DBAs who need a free, starter database for training and deployment
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I am trying to learn Oracle SQL with the help of the book 'Oracle SQL by Example' and it recommends that I download Oracle 11g to be able to take full advantage of what the book has on offer when it comes to practising the skills I learn.
However, Oracle's website seems not to offer 11g for Mac and I cannot find a link to 10g that is still valid (or, indeed, that doesn't dead end at the Oracle website). Does anyone have any suggestions. Thanks.
The simplest route might be to install VirtualBox and one of the pre-built VM images Oracle provides. It's simpler to get started than having to navigate the database software installation and DB creation, if you aren't interested in those aspects at the moment.
The Database App Development VM gives you a pre-installed database, plus SQL*Plus and SQL Developer to run examples and your own code as you learn.