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database applications samples, in R, python, PHP, indexedDb, SQL, node.js
 in R, save in txt format
 in python, use tkinter and txt format
 in PHP, connect to SQL
 in javascript, use indexedDb, https://stackoverflow.com/questions/857670/how-to-connect-to-sql-server-database-from-javascript-in-the-browser
 in SQL, establish database and interface to R, python
 
phone book
name, surname, english name,
age, birthday, 
mobile phone,office, home, past numbers1,2,3,4
address1,street,district, 
email, office, personal, other emails
photo1,2,3,4

remarks, rewards, misconducts,
grades records

functions: add, delete, edit, search, createDB, delete DB, stats DB,
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javascript localstorage quiz
create localstorage array of arrays
array of 3 items

add item
remove item
modify item

init list
load list
save list
download list
uploadlist by email

registration
login

storeRegdata
loadRegdata

choose ramdom
fill class fm bottom
fill class fm top

show menu commands
show quiz
show answer
show results

keep screen record at bottom

find words to downgrade
set to 1.9

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