Plain JSON
A plain JSON follows the industry standard JSON format (as specified in https://www.json.org) and has one of the following structures depending on the actual export/import scenario.
A plain JSON can only contain elements of the following 4 data types: integer, string, boolean, and null.
One-level structure
A one-level plain JSON string must have only one level (cannot be two or more) and must be an object (cannot be an array).
Here is an example of a one-level plain JSON string:
{ "column1":1, "column2":"name", "column3":true, "column4":null... }
Two-level structure
A two-level plain JSON must have its top-level as an array and the second-level as object(s) which represent a row of data.
[ SIMPLE-ROW1, SIMPLE-ROW2, SIMPLE-ROW3, SIMPLE-ROW4, SIMPLE-ROW5... ]
Note that a plain JSON must have no more than 2 levels; the top-level must be arrays and the second-level must be objects.
Here is an example of a two-level plain JSON string:
[{"emp_id":1,"emp_fname":"Fran","emp_lname":"Whitney", &
"street":"9 East Washington Street","city":"Cornwall"}, &
{"emp_id":2,"emp_fname":"Matthew","emp_lname":"Cobb", &
"street":"7 Pleasant Street","city":"Grimsby"}, &
{"emp_id":3,"emp_fname":"Philip","emp_lname":"Chin", &
"street":"539 Pond Street","city":"Oakville"}, &
{"emp_id":4,"emp_fname":"Julie","emp_lname":"Jordan", &
"street":"1244 Great Plain Avenue","city":"Woodbridge"}, &
{"emp_id":5,"emp_fname":"Robert","emp_lname":"Breault", &
"street":"358 Cherry Street","city":"Milton"}, &
{"emp_id":6,"emp_fname":"Melissa","emp_lname":"Espinoza", &
"street":"1121 Apple Tree Way","city":"Iroquois Falls"}, &
{"emp_id":7,"emp_fname":"Jeannette","emp_lname":"Bertrand", &
"street":"2090A Concord Street","city":"Waterloo"}, &
{"emp_id":8,"emp_fname":"Marc","emp_lname":"Dill", &
"street":"897 Hancock Street","city":"Milton"}, &
{"emp_id":9,"emp_fname":"Jane","emp_lname":"Francis", &
"street":"127 Hawthorne Drive","city":"Scarborough"}, &
{"emp_id":10,"emp_fname":"Natasha","emp_lname":"Shishov", &
"street":"151 Milk Street","city":"Grimsby"}, &
{"emp_id":11,"emp_fname":"Kurt","emp_lname":"Driscoll", &
"street":"1546 School Street","city":"Grimsby"}, &
{"emp_id":12,"emp_fname":"Rodrigo","emp_lname":"Guevara", &
"street":"72 East Main Street","city":"Fort Henry"}]