What Is Data Structure?
Data structures are formats used for storing and organizing data according to certain purposes. Structured data allows users to access and use it easily. In programming, data structures are used together with algorithms to write computer programs. The algorithms can perform certain tasks using the structured data.
Types of Data Structures
There are two basic types of data structures: primitive and non-primitive.
Primitive data structures can only store one type of data. You use machine-level instructions to operate them. Primitive data structures include:
- Floats: The structure used for data types that hold decimal values.
- Integers: Structures for data types containing negative or positive whole numbers.
- Character: For data types with single character values, both upper and lower case.
- Boolean: This structure is used for data types with True or False values.
Meanwhile, non-primitive data structures are created using primitive data structures. As such, they’re more complex and can often store more than one data type. Some examples of non-primitive data structures are:
- Array: A data structure containing a fixed number of primitive data types. However, it can only hold one type. For example, it cannot have both integers and floats.
- Strings: This is essentially a character array but terminates with the null character “\0”.
- Stacks: This data structure is used for operations that follow a linear sequence.
What Is the Difference between Structured and Unstructured Data?
Structured data refers to data types that are easily identifiable in machine language. They’re typically quantitative data, which makes them more searchable in databases. Some examples of structured data include:
- Social Security numbers
- Credit card numbers
- Bank account numbers
Meanwhile, unstructured data is data that cannot be easily analyzed with machine language. This can make the data more difficult to organize in relational databases. Examples of unstructured data are:
- Audio files
- Text files
- Image and video files
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