Answer:
D. is a temporary file created by an information system for a single task
(the options are given in the question and correctly provided in ask for detail section)
Explanation:
File oriented information system is the system that is used to store data temporarily. A file has been created for each new user that stores information about client for small piece of time in database. The files does not share information with each other as each independent user creates his own files. The data in this file is deleted after specific time interval.
A work file is a file that stores all the above mentioned information for single time. This is a temporary file.
B. information
Information is a significant
cluster of data that provides user a substantial value. This is the basis where
conclusions and directive pathways are derived. These are the data that are
processed and organized to be useful. For the data to be an information, it has
three characteristics to be assessed with, timely, precision and comprehensiveness.
These three traits of processed data defines and describes an information to be
significant and useful, to be comprehended.
Answer:
The solution code is written in Java:
- public class Toddler extends Parent {
-
- private int age;
-
- public Toddler(int age){
- this.age = age;
- super(age, "toddler");
- }
- }
Explanation:
Firstly, we create a class named Toddler. To inherit the class from Parent, we can use the extends keyword (Line 1). We also presume the Parent class has been defined in advanced.
Next, we declare a private scope attribute which is age in Toddler class (Line 3).
Create a constructor that take age as input parameter (Line 5).
Assign the input age to the private attribute age (Line 6).
Next, we use super keyword to call the superclass constructor by passing age and string "toddler" as arguments (Line 7).
When two tables share the same primary key, they share a
A. one-to-one relationship.
Explanation:
- One-to-one relationship is a type of cardinality that refers to the relationship between two entities A and B in which one element of A may only be linked to one element of B, or the opposite way.
- A one-to-one relationship in a relational database occurs when one parent record or field has either zero or one child record only.
- These relationships are the easiest to represent in databases because both the parent and child records may be in the same table.
- One-to-one relationships associate one record in one table with a single record in the other table.
- These relationships are frequently used to indicate critical relationships so you can get the data you need to run your business.
- A one-to-one relationship is a link between the information in two tables, where each record in each table only appears once.