Q41. SQL was developed as an integral part of...
Relational Database Management Systems (RDBMS). SQL is the ANSI-standard language for creating, querying, updating, and managing relational databases. Major implementatio...
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Q42. What is the difference between a list and a tuple?
- A list is mutable, uses square brackets, and supports append, remove and in-place sorting. - A tuple is immutable, uses parentheses, and once created cannot change. It ...
Q43. What is the difference between == and === in PHP?
== compares values after type juggling, while === compares value and type without coercion. ```php 0 == 'abc'; // false in PHP 8 (true in PHP 7 and earlier) '1' == 1; // ...
Q44. What is the CSS box model?
Every element is a box made of four layers: content, padding, border and margin. By default width applies to the content box, so padding and border are added on top (cont...
Q45. What are the possible ways to create objects in JavaScript?
There are many ways to create objects in javascript as mentioned below: 1. **Object literal syntax:** The object literal syntax (or object initializer), is a comma-separa...
Q46. What is React?
React (aka React.js or ReactJS) is an **open-source front-end JavaScript library** for building user interfaces based on components. It's used for handling the view layer...
Q47. What is the difference between a functional and a non-functional requirement?
Functional requirements describe what the system does: behaviours, features and business rules. Examples include calculating a discount, generating an invoice or allowing...
Q48. What is the difference between output and outcome metrics?
Outputs are things we produce: features, releases, documents. Outcomes are the changes in customer behaviour or business results those outputs are meant to create. Shippi...
Q49. How do you design a lesson plan from learning objectives?
I start with the objective, not the activity. What should students know or be able to do by the end, and how will I know they can? I write the objective in observable ter...
Q50. What does good customer service mean to you?
To me good customer service means solving the customer's problem accurately and making them feel respected throughout. It has three parts. Competence: knowing the product...