Transactions can improve reliability and performance in complex operations by combining a group of operations into one unit of work.
- [Instructor] In database terminology, … a transaction is a group of operations … that are handled as one unit of work. … In practice, this means that you may have many operations, … and if any of these operations fails, … the entire group of operations is treated as fail, … and the database is restored to its state … before the group of operations was started. … For example, imagine a financial application … where several tables need to be updated … for a given transaction, … if any of these operations fails, … corresponding data in the other tables … would be out of sync and invalid. … By combining all of these actions … into a single transaction, … the state of the database will be automatically rolled back … to a valid state if any of the individual operations fails. … Transactions are also used to ensure … that concurrent operations result in a state … as if they were handled separately and sequentially. … In other words, if your database is used … by many clients at the same time, …
This course was created by Bill Weinman. We are pleased to offer this training in our library.
- How databases are organized
- Selecting rows and columns
- Creating new tables
- Inserting and updating data
- Sorting and filtering
- Accessing related tables with JOIN
- Working with strings
- Understanding numeric types
- Using aggregate functions and transactions
- Automating data with triggers
- Creating views
- Using CRUD functions
Skill Level Beginner
2. SQL Overview
3. Fundamental Concepts
7. Dates and Times
Dates and times2m 6s
11. Views and Subselects
12. A Simple CRUD Application
- Mark as unwatched
- Mark all as unwatched
Are you sure you want to mark all the videos in this course as unwatched?
This will not affect your course history, your reports, or your certificates of completion for this course.Cancel
Take notes with your new membership!
Type in the entry box, then click Enter to save your note.
1:30Press on any video thumbnail to jump immediately to the timecode shown.
Notes are saved with you account but can also be exported as plain text, MS Word, PDF, Google Doc, or Evernote.