FLVS FOP DBA Module 2 Prep

programming languages:

a language used to write instructions that can be executed by a computer

machine code:

a set of instructions composed of 1s and 0s the computer can execute without any translation

high-level languages:

as programmers made advancements, they made “human friendly” ones

source code:

program code written in a high level language before being translated into machine code

Low Level Languages

• less readable; in machine code

• write code that controls computer hardware

• tasks quicker

• for specific computer; only work on that one

High Level Languages

• closer to human languages

• write for anything; ex. operating systems, calculations, word processor

• more user friendly, different kinds of hardware

• slower than low level

• needs translation into machine code (interpreting and compiling)

string

non-numeric data type that is a sequence of letters, numbers, spaces, and symbols or alphanumeric information

alphanumeric info

any combination of letters, numbers, or symbols

string literal:

series of keyboard characters inside quotations

variable

a symbol or set of characters in a mathematical equation or programming statement whose value can be changed as needed

concatenation

combining two or more strings to make one big string use (+)

What number do we start counting with in Python?

0

Pseudocode

an outline of your code that goes through the strps individually in an easy-to-understand, human language.

non-numeric data:

a string of characters that is a combination of letters, numbers or symbols; cannot be used in calculations

numeric data:

a number that can be used in calculations

By default Python assume all values you enter using the input() function are

STRINGS

software development life cycle:

1. Planning & Analysis - define the goal, a requirements document, and analyize the scope of work

2. Design - write the pseudocode, mocking up software; how it works/looks like

3. Coding - write the code

4. Testing - identifying defects and debugging

5. Maintenance - updating and making improvements based on user feedback/ resolving defects

rapid development:

refers to an approach that puts a larger emphasis on development (not planning); project can adapt/evolve

version control:

keeping good organization for different versions of the software’s development

change management:

keeping documentation about needed changes; made through SDLC