Something I want to say
Graduated a year,I made the list of what would I want to do,such as, improving English,to be CSer.And I belive that done is better than prefect.So from now on,I start to do reading report.
I'm learning how to be filemaker besides developer.
About technical
I'm a junior.So if there're any errors,please kindly correct me.
Started
About Data Strcuctures
- data
- A collection of information.There must be several known factors considered.
- Data representing quantities,characters,or symbols on which operations are performed by a computer are stored and recorded.
- data element
The term data element is an atomic unit of dta that has precise meaning or precise semantics.
例子：
学生记录就是一个数据元素，由学号、姓名、性别等数据项组成。
不要把数据、数据元素和数据项搞错。
数据项=====》数据元素=====》数据
- data objects
A data object is a region of storage that contains a value or group of values.
数据对象是具有相同性质的数据元素的集合。
事实上，我对这句话还是不太明白，所以还有待研究。
- data types
A data type constrains the values that an expression,such as a variable or a function,might take.
- Atomic data types-----原子类型，不可再分的数据类型
- structure type-----结构类型，可再分解的数据类型
- ADT----抽象数据类型，数学模型及其操作，通常用（数据对象，数据关系，基本操作集）这样的三元组来表示
- data structure
在任何问题中，数据元素都不是孤立存在的。
数据元素相互之间的关系称为结构。
