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Software Dev Fund 1A
MTA - Software Development Fundamentals 1A
| Term | Definition | Analogy |
|---|---|---|
| XML | is a good language used to send messages between differing types of software tools and devices; it is very universally readable | If you have a person from one country and another from a different country but both of them know Morse code then they can send messages in Morse code and they both can understand them; it is a common language |
| * | in SQL this is a wildcard character which means to select ALL of the column types for a given query | If a car dealer tells an assistant to "Wash * cars" he means to wash ALL the cars, not just the new ones or the Ford ones or the dirty ones. |
| White Box | this kind of testing is done by a programmer who can see into the code of a program and can run tests to see if the code performs as it should; the emphasis is on the programmer having access and knowledge to see and understand the code. | An auto mechanic can "white box" test your car better than the average driver because they know what is going on under the hood. |
| polymorphism | this is a major pillar of what makes object oriented programming what it is; it means that an object that has inherited from another object is actually both objects at the same time, a Firetruck is also a BasicTruck at the same time | A speed boat is also just a boat; a cruise ship is also just a ship; a ski boat is also just a boat; they all share all the basic boat characteristics like a hull, an engine and a way to steer. |
| try{ } | this block of code is used to attempt to run some code that a programmer knows may cause an error; if we put this code inside this area we can control the program so that it will not crash if the code fails; it is enclosed in curly brackets | If you go for a drive in a car you are hoping to get to where you are going without an accident, but certain precautions can be taken to protect you if there is an accident, and you can go on and do other things afterward. |
| WebMethod | this is an attribute that you can give to a method in a web service program to make it available to be used as a web service function | If you are available for work you can post your resume on an online job board to let people who are hiring know. |
| normalization | this is used to help eliminate redundancy in a database so that any given piece of data is not entered in multiple places in the database; if it is that can cause problems if it is updated in one place but not another | Instead of sending an individual message to every employee a boss might just send a mass email and everyone gets the same message; that way there is no danger of someone getting a slightly different message |
| pooling | this is used to create a group of connections to a database and have them pre-established so that users can access data in the program faster; database connections take time; if there is a group of them already set up to use it is faster | If 20 BigMacs are already cooked and waiting to be sold during the lunch rush it is faster than if each one has to be cooked individually after it is ordered. |
| ORDER BY | this is used to arrange the results from a database query | If a teacher asks students to line up in alphabetical order she can say "Line up A-Z". |
| SQL | this is a language that is used to query a database; it has keywords like "SELECT", "FROM" and "ORDER BY" | You have to understand boating language to get things done on the water: "stern" means the back of the boat, "starboard" means the right hand side and "port" means the left hand side. |
| ERD | refers to a graphical view of the structure of a database; Entity Relationship Diagram, it shows which columns in a table in a database would relate to other columns in other tables; | The roster of a sport team can show you multiple things about the relationships on that team: who's on offense and who's on defense, who reports to which coach, who is the captain of which group, what their unique assigned numbers are.... |
| transaction | an interaction with a database in which an attempt is made to alter data; if each piece of data attempting to be altered is not successful then none of the changes will go through, they will be "rolled back". | If a football team plays 3 quarters of a game and then walks off the field before the 4th quarter then all the effort they exerted previously will be invalid. |
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