You can use the Recycle Bin to view and restore dropped database objects. When you drop a table, the space associated with the table is not immediately removed. The Oracle database renames the table and places it and any associated objects in the Recycle Bin. You can recover objects in the Recycle Bin at a later time.
Which four activities can be performed using SQL Developer?
Oracle SQL Developer is a graphical version of SQL*Plus that gives database developers a convenient way to perform basic tasks. You can browse, create, edit, and delete (drop) database objects; run SQL statements and scripts; edit and debug PL/SQL code; manipulate and export (unload) data; and view and create reports.
What can I do with SQL Developer?
SQL Developer provides powerful editors for working with SQL, PL/SQL, Stored Java Procedures, and XML. Run queries, generate execution plans, export data to the desired format (XML, Excel, HTML, PDF, etc.), execute, debug, test, and document your database programs, and much more with SQL Developer.
How do I use the Recycle Bin?
Double-click the Recycle Bin icon to see your recently deleted items. Right-click the item you want and choose Restore. The handy little Recycle Bin returns your precious item to the same spot where you deleted it.
What is Recycle Bin in Oracle database?
The recycle bin is a logical collection of previously dropped objects, with access tied to the DROP privilege. The contents of the recycle bin can be shown using the SHOW RECYCLEBIN command and purged using the PURGE TABLE command. As a result, a previously dropped table can be recovered from the recycle bin.
Where can I practice SQL coding?
Learn SQL Online: DIY Practice
- SQL Fiddle. SQL Fiddle is a great place to start if you’re looking to, well, fiddle around with SQL. …
- SQLZOO. You’ll find it easy to get going in SQL at SQLZOO. …
- Oracle LiveSQL. …
- W3resource. …
- Stack Overflow. …
- DB-Fiddle. …
- GitHub. …
- Coding Ground.
How do you practice SQL skills?
The best way to learn SQL is by practicing it. Install a free open source database so you can start writing and running simple queries using your own data. MySQL is a popular free database that is compatible with most operating systems.
Is SQL a technical skill?
SQL: The one technical skill all non-technicals need to know.
Which SQL keyword is used to retrieve a maximum value?
MAX() is the SQL keyword is used to retrieve the maximum value in the selected column.
Can you retrieve from Recycle Bin?
Yes, it’s possible to restore emptied Recycle Bin, but not without a few special tricks. … However, until some application uses the freed storage space, the original files are still there intact, which is why it’s possible to recover files from Recycle Bin after empty.
What Colour is Recycle Bin?
Food Waste – Dark Green or Black body with Burgundy lid. Paper and cardboard recycling – Dark Green or Black body with Blue lid.