Apart from that, we can say that The RAD (Rapid Application Development) model prescribes certain phases in software development and also as a set of tool that allows speedy objects development, graphical user interface, and reusable code for client/server applications . 4.2. The Objective of Rapid Application Development (RAD) The objective or main purposes of Rapid Application Development (RAD) are the following: • To ensure user need can be filled effectively with low maintenance cost (Low Cost). • To ensure high quality system meet the business requirement when it begin operation (High Quality). • To ensure the products can be developed faster with the short period of time (High Speed) • Aims to build a working system rapidly  4.3.
Data Replication: A popular option for data distribution as well as for fault tolerance of a database is to store a separate copy of the database at each of two or more sites.A replicate of each fragment can be maintained at several sites. Data replication is the process of deciding which fragments will be replicated. IV. FUNDAMENTALS OF TRANSACTION MANAGEMENT AND CONCURRENCY CONTROL Transaction: A transaction consists of a series of operations performed on a database. The major issue in transaction management is that if a database was in a consistent state prior to the initiation of a transaction, then the database should return to a consistent state after the transaction is completed.
The primary function of DVR is to minimize the voltage sags on lines that cater to sensitive equipment. The control voltage applied to the load by injecting a voltage of compensating amplitude, frequency and phase angle to the distribution line. The voltage turns to the desired magnitude in case of any disturbances. The device functions as a filter between the transmission line and the facility, thus enabling the facility to continuously receive clean power. The DVR primarily responsible for restoring the quality of voltage delivered to the end user when the voltage from the source is not appropriate to be used for sensitive loads.
DR testing is often overlooked in organisations as creating a plan for disaster recovery can tie up additional resources, this is seen as a viable solution once created that does not require ongoing testing. Tests provide an organisation with a basis to identify problems or areas that require improvements or replacement if necessary. Communications, data recovery and applications are typically a focus of all disaster recovery testing. DR tests should be performed regularly throughout the year and should be incorporated into all planned maintenance. Audit logs can be analysed furthermore to determine what worked as expected, what didn’t work as expected, what changes are required and what tasks need to be re-tested.
Some of the most significant advantages and applications are summarized below. • Interoperability. An SDR can seamlessly communicate with multiple incompatible radios or act as a bridge between them. Interoperability was a primary reason for the US military’s interest in, and funding of, SDR for the past 30
The process of developing the software itself including the minimal planning required for generating the more efficient product. Rapid Application Development (RAD) is an incremental software development process model which emphasizes a rapid development cycle and elicit early feedback from end users. It is a high speed adaptation of the linear sequential model in which the rapid development is achieved by using component-based construction. If requirements are clear and well understood and the project scope is restricted, the RAD let the software developers to build a fully functional system
Furthermore, DRAM supports access times of about 60 nanoseconds, SRAM can give access times as low as 10 nanoseconds. Despite SRAM being faster, it's not as commonly used as DRAM because it's more expensive. The simple structure of DRAM in comparison with SRAM also permits more data storage on the former. Thus, DRAM is often used for the computer’s main memory, and is actually the more common RAM found in PCs. DRAM advantage over SRAM is its structural simplicity that only one transistor calls MOSFET gates and a capacitor to store a bit as a charge are required per bit, compared to six transistors in SRAM.
In fact, with an automatic features that increase the storage and speed of data collection, RFID technology is an improved alternative to barcodes. According to Ferrer, Dew, Apte (2010), RFID is a technology that can used to be identify objects automatically. The system consist of radio-emitting tags, readers, and a host computer
USB drives or Flash drives —>USB flash drives are often used for the same purposes for which hard disk drives or CD drives were once used, i.e., for storage, data back-up and transfer of computer files. They are smaller, faster, and are more durable and reliable because they have no moving parts. Additionally, they are immune to electromagnetic interference (unlike floppy disks), and are unharmed by surface scratches (unlike CDs). Advantages and Disadvantages of local data storage Advantages • The user has complete control over access to your files and therefore it is really secure in comparison to an online storage where you don't know where your data is stored and who has access to your data. • The data can be accessed easily and quickly.
1. It reduces the work of database administrator or IT administrator. Since the RBAC system is based on defining roles and their privileges instead of defining rights for each single employee, it is easier to keep these roles maintained and reviewed over regular periods whatever the number of the hired employees or their status. 2. Improving compliance.