Data Type of Data Database Big Data and Data Warehouse

Data Type of Data Database Big Data and Data Warehouse, What is Database, Types of Data & Databases, SQL vs. NoSQL, Types of Database Testing.

Data Type of Data Database Big Data and Data Warehouse

An Overview of Database Technology

1. What is Data?
2. Types of Data
3. What is Database and Types of Databases?
4. Big Data
5. Data Warehouse
6. Testing of Data?
7. SQL/Relational Database Testing

1. What is Data?

Data is defined as facts or information that’s stored and used by a computer.

Data can be classified into three types
a. Structured Data
b. Semi-Structured Data
c. Unstructured Data

Data can be stored in two forms,
a. File
b. Database
Relational Databases / SQL Databases (MS SQL Server, Oracle, MySQL, SyBase, DB2, DB/400, etc,
Non-relational Databases/NoSQL Databases (MongoDB, Redis, CouchDB, Cassandra, HBase, etc,

2. Types of Data

There are multiple types of data. Some of the more common types of data include the following:

a. Text (string)
b. Number (integer or floating-point)
c. Single character
d. Boolean (true or false)
e. Image
f. Audio
g. Video
Etc,

3. What is Database and Types of Databases?

A database is a collection of data. It supports electronic data storage and manipulation, and management.

Types of Databases:

a. Centralized database.
b. Distributed database.
c. Personal database.
d. Cloud database.
e. Object-oriented database.
etc,

But these can be segregated into two categories:
i. SQL Databases
ii. NoSQL Databases

4. Big Data

Big Data, a huge amount of data, and this can be structured, semi-structured, and unstructured data.

Examples:
i. Stock Exchange Data
ii. Social Media Data

5. Data Warehouse?

A Data Warehousing (DW) is a process for collecting and managing data from varied sources to provide meaningful business insights.

6. Testing of Data?

a. SQL/Relational Database Testing
b. NoSQL Database Testing
c. ETL Testing

7. SQL/Relational Database Testing

We have three types of SQL/Relational Database Testing, they are,

a. Structural Database Testing
b. Functional Database Testing
c. Non-functional Database Testing

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