A database is a structured collection of data that exists as a file in a data management system and can be accessed through computer applications. Databases can also be stored on memory cards, hard disks, and CDs. Its main feature is to retrieve information and data using various methods. 

By purpose, databases are classified into 4 popular types:

• File database : This is data stored in the form of files. The most commonly used database file format is *.mdb Foxpro, some other file formats are text, ASCII, and *.dbf.
• Relational database : This is a different type of data (entities) stored in data tables. Famous relational database support management systems include MS SQL server, Oracle, and MySQL...
• Object-oriented database : It also represents data in the form of tables. The difference is that the tables provide additional functionalities to replicate or modify existing objects. Management systems that support object-oriented databases are MS SQL server, Oracle, and Postgresql.
• Semi-structured database : It stores information in XML format. Thanks to the storage of different data types, semi-structured databases provide a new direction in database research and application.

Additionally, there are two classifications of databases according to the operating system as mentioned below:

• Database using Linux system: MySQL, MariaDB.
• Database using Windows system: SQL Server – MSSQL.

A database, in addition to its primary function of storing, retrieving, and updating data, assists in the management of security services and the recovery of data management systems, as well as in the enforcement of constraints within the system.

A database also provides concurrency control for enhanced security and creates a multi-user environment with secure connections. Freelance database service s simplify data storage by eliminating duplication and speeding up daily information updates. In particular, database service s typically includes:

• Remote Database Administration

With database administration service, you can save money while improving performance by managing and operating your database systems stably and securely. It can also assist in reducing the workload of the internal database department.

• Monitoring Database 24/7

It means freelance database services will assist businesses in monitoring databases around the clock. Their experts will help you uncover unforeseen pitfalls and deal with them quickly.

• Database Security

Enterprise database threats are always present. As a result, freelance database experts assist businesses in database security solutions and preventing potential vulnerabilities and threats.

• Database Backup and Restore

Our backup and storage service encrypts and backups customer databases to a secure cloud system. As a result, when there is a problem or disaster, customers can quickly recover their data.

A database is a structured collection of information that can be easily accessed, managed, and updated. Bibliographies, full-text, numeric, and image content are what you can find in databases. You can access an online database through a network, and the most common example being the internet, as opposed to a local database held on a computer that is only connected to an internal network or a computer.

The advantage of using online database service s over traditional software is that they can be tailored to your specific needs. As your company expands, you can modify your database structure and adapt the platform to meet your unprecedented demands.

Now let’s get to some examples of well-known databases that are available for free as a test version:

• Google Cloud Platform

Google Cloud Platform (GCP) is a cloud computing platform that includes a set of hosted services for computing, hosting, and developing applications that run on Google hardware. Software developers, administrators, or IT professionals can access it via the internet or a network connection.

• Microsoft SQL Server

SQL Server software is mainstream because it is optimized to run on large database environments containing up to Tera - Bytes while serving thousands of users. In addition, this application supports a variety of SQL programming styles, including ANSI SQL (Traditional SQL), SQL, and T-SQL (Transaction-SQL).

• Oracle Database

Oracle Database is another well-known relational database. Its primary responsibilities include application development and data warehousing. You have two options for a free online database: Oracle Autonomous Transaction Processing and Oracle Autonomous Data Warehouse. The database storage space is limited to 20 GB in both cases.

A database is a collection of data that is structured to be easily managed (read, add, delete, and edit data). The primary distinction between a database and regular data is the systematic structure. 

The first databases were magnetic tapes that stored data records sequentially. Since then, databases have continued to evolve into complex, high-performance systems with their specialized field of study. Let's take a look at the four types of database service s:

1. File database : It is the most commonly used database file format. Other file formats besides Foxpro include text, ASCII, and *.dbf.
2. Relational database : This is a data type stored in tables. MS SQL Server, Oracle, and MySQL are examples of well-known relational database support management systems.
3. Object-oriented database : It also uses tables to represent data. The tables, on the other hand, provide additional functionality for replicating or modifying existing objects. MS SQL Server, Oracle, and Postgresql are management systems that support object-oriented databases.
4. Semi-structured database : It is a database that stores data in XML format. By managing various data types, a semi-structured model opens up a new path for database research and application.

Database service s underpin nearly every aspect of life, such as storing phone contacts, friend lists on Facebook, email addresses, bank transactions, call history, etc. Statistics show that 99.99% of applications require a database to operate. In other words, almost all units do require the use of a data system, from simple database sources like text files, Microsoft Access, and SQLite to large and complex sources like SQL Server and Oracle.

As the world is now in the digital era, almost all business activities are related to technology, in which databases play an important role. Besides the primary function of storing, retrieving, and updating data, a database aids in the management of security services and the recovery of data management systems, as well as in the enforcement of constraints within the system, at the same time, managing and controlling all clients accessing the data.

Freelance database service s offer an easy way to store data because they eliminate duplication and fasten daily information updates. Furthermore, a database provides concurrency control for more security and creates a multi-user environment with secure connections. With this advantage, it is increasingly popular in programming in particular, and information technology in general, to support business activities across all industries.

DBaaS (Database as a Service) is the world's second most popular technology infrastructure, trailing only cloud server rental. To a large extent, it is a service that enables the rapid deployment and development of a fully automated database management system. DBaaS providers will handle all of the low-level operational aspects of database management, allowing you to concentrate on application development.

Database service s assist businesses in rapidly deploying a fully automated database management system. They do not have to worry about operation, patching information security or backup, disaster backup, or dealing with server crashes or corrupt drives. They only need to communicate using the service.

To accomplish this, DBaaS providers host your database software and data while managing the underlying hardware and network infrastructure. They also automate all management tasks like provisioning, scaling, failover, and backup/restore and offer support when needed.

The rise of cloud computing has changed the way businesses operate, leading to a boom in freelance database service s in recent years. Despite its numerous advantages, DBaaS has some drawbacks compared to an on-premises database. The most serious one is frequently a lack of control over the IT infrastructure, meaning a corporate IT team will no longer have direct access to servers and storage with a managed database.

As digital transformation is a collaborative effort, various industries have developed digitization projects and specialized and integrated data infrastructures. As a result, freelance database services in science and technology are on the mission to create a data bank that leverages in-house and third-party data.