Mobile Databases in DBMS

Introduction:

You may have noticed that there are more and more demands placed on mobile computing to deliver the support needed by the technology used by an increasing number of on-the-go workers. These people must act as though they are working in an office, but in fact, they are operating from remote corners of various sites in the same area, such as their houses, clients' premises, or just while travelling to remote locations.

A remote worker may be present at the "office" in the form of a laptop, desktop, PDA (Personal Digital Assistant), or other Internet-accessing device. Mobile users will soon be able to access any data from any location at any time because of the rapid development of the mobile network, wireless media, and satellite communications. Business protocol, practical considerations, security concerns, and expenses could still limit communication to the point where it is impossible to maintain internet connections for as much as users would like at any time. A remedy to some of these limitations or issues is provided by mobile databases.

Mobile Database:

A Mobile Database is a type of database that can be accessed by a mobile network and connected to a mobile computing device (or wireless network). Here, there is a wireless connection between the client and the server. In the modern world, Mobile Cloud Computing is expanding quickly and has enormous potential for the database industry. It will work with a variety of various devices, including Mobile Databases powered by iOS and Android, among others. Couchbase Lite, Object Box, and other popular databases are examples of databases.

Mobile Database Environment has the Following Components:

• For storing the corporate and providing the corporate applications, a Corporate Database Server and DBMS is used.
• For storing the mobile data and providing the mobile application, a Remote Database and server are used.
• There is always a two-way communication link present between the Mobile DBMS and Corporate DBMS.

Features of Mobile Database:

• There are a lot of features of Mobile Database which are discussed below:
• As more people utilize laptops, smartphones, and PDAs to live on the go.
• To prevent frequent transactions from being missed due to connection failure, a cache is kept.
• Mobile Databases and the main database server are physically independent.
• Mobile gadgets hosted Mobile Databases.
• Mobile Databases can communicate with other mobile clients or a centralized database server from distant locations.
• Due to unreliable or nonexistent connections, mobile users need to be able to operate without a wireless connection with the aid of a Mobile Database (disconnected).
• Information on mobile devices is analyzed and managed using a Mobile Database.

Mobile Database Consists of Three Parties Which are Described Below:

• Fixed Hosts:
  With the aid of database servers, it handles transactions and manages data.
• Mobile Units:
  These are mobile, transportable computers, and the cell tower they utilize to connect to base stations is a part of that geographical area.
• Base Stations:
  These two-way radios, which are installed in fixed places, allow communication between the stationary hosts and the mobile units.

In many instances, a user may utilize a mobile device to log in to any corporate database server and deal with data there, depending on the specific requirements of mobile applications. While in other cases, the user can upload data collected at the remote location to the company database or download it and work with it on a mobile device. The interaction between the corporate and mobile databases is frequently intermittent and only occasionally establishes or establishes a link for a brief period of time.

Additional Functionalities of a Mobile DBMS Consist of the Following Capabilities:

• It should communicate to the centralized and primary database through different modes.
• On mobile devices and centralized DBMS servers, the data should be repeated.
• From the internet, capture the data.
• Mobile devices should be capable of dealing with that data.
• Mobile devices must analyze the data.
• Must create a personalized and customized application.

Limitations:

• There are a lot of limitations or drawbacks available, which are pointed out below:
• Its wireless bandwidth is restricted.
• It is very difficult work to make this database theft-proof.
• To operate this, we need unlimited battery power.
• Wireless communication speed suffers in mobile databases.
• In terms of security, it is less secure.