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What are primary and foreign keys
How to connect to a database in PHP? 64. How to get data from a database in PHP? 65. What are indexes in MySQL? 66. What is the purpose of transactions? Tell us about the principle of work. 67. Is it possible to cancel a transaction? How to do it? 68. What Bosnia and Herzegovina Phone Number List types of connections do you know in databases? How are they different? 69.? 70. Can a primary key be null? 71. What are indexes? 72. What is the difference between MyISAM vs InnoDB? 73. What is a JOIN? 74 . What are the types of JOIN and what is the difference? 75. WHERE and HAVING? 76.? Practical tasks.
What is the difference between
This class is spelle incorrectly. For you to rewrite? < ? php class Shape { public width ; public height ; public function __construct ( width, height ) { this – > width = width ; this – > height = height ; } } class Triangle { public radius ; public function __construct ( radius ) { this – > radius = radius ; } } class AreaCalculator { public function calculate ( shapes ) { foreach ( shapes as shape ) { i an email address using regular expressions. 84. Write a PHP AERO Leads function to sort an array of integers in ascending order using the bubble sort algorithm. 85. Write a PHP function to remove all duplicate values from an array. 86. Create a PHP class that implements a queue data structure.
