CS4HS-2015 (Database) by Amitrajit Sarkar https://padlet.com/amitrajit/CS4HS2015_DB CS4HS 2015 at UC. Database workshop, Presented by Amit Sarkar en-us 2015-11-27 06:21:16 UTC 2025-11-14 17:31:49 UTC hello@padlet.com https://padlet-assets.storage.googleapis.com/portrait/pocketwatch.jpg Why Database not Excel? https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794115 Have you hard of REDUNDANCY?

]]> 2015-11-29 22:39:30 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794115 easier to create relationships https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794191 2015-11-29 22:40:42 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794191 Much easier to run scripts  for data extraction on a database https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794208 2015-11-29 22:40:50 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794208 Database can be used by multiple users  https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794226 2015-11-29 22:41:08 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794226 Excel is for  calculations etc, not storing data https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794306 2015-11-29 22:41:48 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794306 Flexibility to create customised queries of the data and generate custom reports https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794316 2015-11-29 22:41:55 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794316 You have better control over the data -  can create things like Forms and Reports a lot easier https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794327 2015-11-29 22:41:59 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794327 It allows more organised storage. Field size can be controlled to make the storage more efficient. https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794351 2015-11-29 22:42:17 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794351 Databases are for organizing information and retrieving what is useful for the particular purpose. https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794374 2015-11-29 22:42:34 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794374 Can create multiple interfaces and navigation systems https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794409 2015-11-29 22:43:07 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794409 Database can handle more data, more efficiantly https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794411 2015-11-29 22:43:08 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794411 Sooo much data in today's world we need to be able to store it and make sense of it - and only retrieve what we need at any particular time. https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794464 2015-11-29 22:43:42 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794464 Can use Validations and Input Masks to control data input https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794496 2015-11-29 22:43:57 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794496 Access may be vanilla but it allows students to think and plan and learn skills rather than focus on learning software. The skills they learn are transferrable. https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794560 2015-11-29 22:44:42 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83794560 Char vs Varcahar https://padlet.com/amitrajit/CS4HS2015_DB/wish/83798490 2015-11-29 23:45:20 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83798490 char is a fixed number of characters good when you know characters will be the same length everytime https://padlet.com/amitrajit/CS4HS2015_DB/wish/83798507 2015-11-29 23:45:26 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83798507 char = character https://padlet.com/amitrajit/CS4HS2015_DB/wish/83798510 2015-11-29 23:45:29 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83798510 The answer below :) https://padlet.com/amitrajit/CS4HS2015_DB/wish/83798557 2015-11-29 23:46:24 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83798557 Char supports fixed-length data and varchar supports variable-lengths of data. https://padlet.com/amitrajit/CS4HS2015_DB/wish/83798560 2015-11-29 23:46:24 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83798560 varchar is when the value may change from one record to the other https://padlet.com/amitrajit/CS4HS2015_DB/wish/83798562 2015-11-29 23:46:25 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/83798562 Hashing https://padlet.com/amitrajit/CS4HS2015_DB/wish/140392592 When checking entered data against stored, compare the hashed entered data against the stored value]]> 2016-11-29 02:48:19 UTC https://padlet.com/amitrajit/CS4HS2015_DB/wish/140392592