The way companies store, organize and manage their data has a significant impact on organizational effectiveness (Laudon & Laudon, 2012). To determine whether to have a database separate from a data warehouse, you must first understand the differences between the two. A database is called an organized collection of data. Databases are created to manage large amounts of information by storing, retrieving, entering and managing that information. Databases are configured so that one set of software provides all users with access to all data. A simple database is generally designed as normalized tables to minimize redundancy and optimize write operations to the table. This can be achieved by dividing large tables into smaller tables and less redundant tables, so that data of the same type is isolated in one place so that additions, deletions and changes to a field can be done in one place. only table. The smaller tables are then connected together via relationships defined between them, resulting in many joins between tables when retrieving data. Data is often stored in separate systems, which sometimes makes it difficult to obtain certain information. In order to retrieve data from a database, you must use a database management system (DBMS). Database management systems are designed applications that interact with the user, other applications, and the database itself to capture and analyze data. The DBMS is designed to enable the definition, creation, querying, updating and administration of databases (DifferenceBetween.info, 2014). The DBMS frees the programmer or end user from the task of understanding where and how data is actually stored by separating the logical medium from the ......paper assignments. The next evolution in wireless communication, called 4G networks, is fully packet-switched and capable of 100 Mbps transmission speed, with superior quality and high security (Laudon & Laudon, 2012). Overall, convenience is the biggest advantage of mobile wireless networks over wired networks. Wireless networks are slower, less reliable and less secure than wired networks. A mobile wireless network works well in an educational environment like the one we know. Our colleagues come from different parts of the states and many of us work full-time at different times of the day. A mobile wireless network allows us to communicate in real time while continuing to fulfill our personal or family obligations. For my part, I can go online via my mobile device and participate in my homework during my lunch break..