Have you ever seen a online database which is free to use and free to practice.
Imagine you do not have to dowload GB's database software, install on your PC or laptop to practice SQL plus.
APEX
Application Express is a freeware application development framework based on Oracle Database. This was previously called HTML DB, long back while this was still HTML DB I had developed a Learning management system Oracle University which never went live on production. :-( but never stopped me from working on it.
You can download the current version from http://www.oracle.com/technetwork/developer-tools/apex/downloads/index.html
But if you do not want to download and just want to practice or explore the options you can try creating an account on http://apex.oracle.com/
For begginer follow the steps below to create your own account and start using APEX for sql basics practice.
1. Click on Sign Up.
2. Click on Next.
3. Enter a valid email along with First Name and Last Name and click Next.
4. Workspace is like a database instance or database id where you would create all the related objects of an application. Workspace name should be different than the one's already exist in APEX, so make sure you use a unique name.
5. Schema name can be anything but default database objects and it will be specific to your workspace. Along with this you can choose the space required for your schema. Maximum that you can use is 50MB. Click Next once done.
6. Once you get on the following screen, enter a valid reason for which you want to use APEX and click on Next.
7. Enter the security code in the below screen and submit the request.
8. Once this is done, APEX will send an email confirmation to your mail address entered in step 2 which will contain a link which will activate your account.
9. Once you click on the link, APEX will create your workspace and then it will send you a password back to your email account. Use the password and first time you login, you will have to change your password. Once this is done then your are good to go.
10. To start using SQL, click on SQL Workshop ---> SQL Commands,
11. You can use the text box to execute SQL statements. Schema created here will have all the default tables that are available in a fresh database install along with APEX base tables.
Hope this post helps, leave your comments if you need more information.
Imagine you do not have to dowload GB's database software, install on your PC or laptop to practice SQL plus.
APEX
Application Express is a freeware application development framework based on Oracle Database. This was previously called HTML DB, long back while this was still HTML DB I had developed a Learning management system Oracle University which never went live on production. :-( but never stopped me from working on it.
You can download the current version from http://www.oracle.com/technetwork/developer-tools/apex/downloads/index.html
But if you do not want to download and just want to practice or explore the options you can try creating an account on http://apex.oracle.com/
For begginer follow the steps below to create your own account and start using APEX for sql basics practice.
Follow simple steps to create your own login, its as simple as creating an account for any social networking site. 1. Click on Sign Up.
5. Schema name can be anything but default database objects and it will be specific to your workspace. Along with this you can choose the space required for your schema. Maximum that you can use is 50MB. Click Next once done.
6. Once you get on the following screen, enter a valid reason for which you want to use APEX and click on Next.
7. Enter the security code in the below screen and submit the request.
8. Once this is done, APEX will send an email confirmation to your mail address entered in step 2 which will contain a link which will activate your account.
9. Once you click on the link, APEX will create your workspace and then it will send you a password back to your email account. Use the password and first time you login, you will have to change your password. Once this is done then your are good to go.
10. To start using SQL, click on SQL Workshop ---> SQL Commands,
11. You can use the text box to execute SQL statements. Schema created here will have all the default tables that are available in a fresh database install along with APEX base tables.
Comments
Thanks for providing the useful information.
Regards
Nithin S Kamath
I ACCESED THE ONLINE SQL THROUGH UR LINK BUT.....
WHEN I GAVE SELECT*FROM EMP AND SAY RUN IT SHOWING ERROR LIKE .....
ORA-20001: Query must begin with SELECT or WITH
WHAT IS THE REASON FOR THIS ERROR?
U TOLD EMP IS DEFAULT TABLE... RIGHT? WHAT I CAN DO?I HAVE TO CREAT NEW TABLE OR....?
You might be missing something. Have you followed all the steps to create APEX account.
If yes then try the following and let me know if you get any error.
1. desc emp
2. select table_name from user_tables
To create a table use CREATE TABLE command.
Regards,
Mithun
i am very much thankful to you pproviding this useful information.
i accessed the online sql workshop and its working.
SELECT * FROM table_name;
is not working for few tables that is available online / either if i create.
But, if i give DESCRIBE table_name; it is displaying all the column names & its types.
Could you pls explain why SELECT statement is not working for few tables? (Even if table name is EMP or EMP_DETAILS or EMP$ etc...
Thanks,
Sundar
Thanks for providing so much information and guidelines
Thanks
sharada
Mithun
Hello Mithun,
I had just created an account in Apex. I ran a query which returned more than 10 records and then a message "More than 10 rows available. Increase rows selector to view more rows." was displayed. Could you tell me how to increase the rows selector in APEX?
Thanks,
Regards,
Brijesh
There is a drop down box which has number 10 which is in the same row as RUN button, this is the row selector.
Increase the count using drop down and this should show required number of rows.
Regards,
Mithun
Regards,
Brijesh
In APEX, for executing the query, is there any shortcut key? Is clicking on "Run" button the only way?
Regards,
Brijesh
I am currently attending your SQL batch in Basvangudi branch. I wanted to work on more Projection and Selection queries,other than the assignment you gave, but I could not find them.Could you please send a link or something?
Regards,
Brijesh
There is no shortcut. Only way is to use the RUN button.
Regards,
Mithun
You can refer to the link below,
CLICK HERE
Regards,
Mithun
i created online account in apex and i used it once but now i,m unable to login again.....Is there any option like forgot password? as i'm not sure whether my password is correct or not.
please help me on this....
I want to know is it good for long term career and which way the career in future will move if I work on it. I will wait for your reply Sir.......and is it possible to move in Cloud computing after working on it in future.......