* Added info on API Tokens
Added some information on what tokens are.
* Added code to demonstrate access token
Added sample CURL code from Dropbox to illustrate the use of access token.
* Add foreign key definition and example
A very basic foreign key definition and example
* Fix typo as recommended
Line 66: as @nik recommendation
Line67: fix plural nouns
* grammar
* Add links to More Information section
Added two links to More Information section. One to a MIPS emulator and one to a helpful tutorial.
* Applied suggested changes
* Translate challenge subtitles and example challenge text to Spanish
* Corrected errors in syntax and punctuation
* Multiple corrections of it/s to its plus other grammar corrections
* Correction and added paragraph to CSS Flex article
* Corrected my own typo
* Corrected capitalization, American spellings and typos
* add Explanation of deadlock with example
Explanation of Deadlock with example are done along with this Deadlock avoidance with Algorithm to Deadlock avoidance are also explained.
* added frontmatter, corrected formatting
Threw in something about what quantum computing could do for database development since they would also benefit greatly from the advancements in performance.
