Database design

Importance of Database Design Principles Introduction Database design is simply a process that produces a database model in detail. A proper database provides us access to up to date information which is accurate. A correct design enables us to learn more and helps in achieving the goals whether it is short term or long term. It helps in bringing change. The terms used in date base are tables. It is the place in which data bases are written. A good data bases divides the information into subject based table. It provides access to the information required to merge tables together. It helps and ensures the accuracy of the information stored and finally accommodates the data processing (Database design basics, 2014). Importance of Database Design Database designs are important for the development of the system and the applications. It is important for the high performance of applications applied. If not done smoothly, it will slow the process. If it is not related to each other, it will cause the same problem. It would not be effective and may be hard to read. It will not be normal. A good dataset…

Discuss how potential errors in the design and construction of a database can be avoided. Accidental deletion of fields When a database is being used you might find it easy to accidently delete data which could mean a lot of stress if it is something which is very valuable. One main way to avoid this would be to make sure that back-ups are made of the data, so whatever the matter the data will not be completely lost. Back-ups can be stored on anything like a memory stick or an external hard…

Step 9 monitors the database application systems and improves performance by making amendments to the design as appropriate. 16.2 What factors can be used to measure efficiency? There are a number of factors that we may use to measure efficiency: • Transaction throughput: this is the number of transactions processed in a given time interval. In some systems, such as airline reservations, high transaction throughput is critical to the overall success of the system. • Response time: this is…

According to Ewebarchitecture.com (n.d.), “MySQL can be integrated into a Web environment, and it supports C, Pearl, Java via the Java Database Connectivity API (JDBC), and Python programming.” There is a lot of flexibility with MySQL to work with these programming languages and can be used with Windows, Linux, and UNIX operating systems. MySQL is a client/server system in which software is installed on a computer to access the database on a server to save, modify, and query data. With MySQL,…

Task 10 (D1) Discuss how potential errors in the design and construction of a database can be avoided. One of the potential errors that can occur when creating a database is that field names and names can be spelt incorrectly due to human error this can be difficult to spot if the database is big the way of making sure that there are no naming errors is to make sure that every is checked regularly and more than twice to make sure that the chances of finding a spelling mistake is reduced. Using…

[pic][pic] [pic]2 RELATIONAL MODEL: CONCEPTS, CONSTRAINTS, LANGUAGES, DESIGN, AND PROGRAMMING [pic][pic][pic][pic][pic][pic][pic][pic][pic][pic] [pic]5 The Relational Data Model and Relational Database Constraints This chapter opens Part II of the book on relational databases. The relational model was first introduced by Ted Codd of IBM Research in 1970 in a classic research publication "System R4 Relational." (Codd 1970), and attracted immediate attention due to its simplicity,…

been many clear advancements in the space of databases. Two very common databases are MySQL and MongoDB. They are similar in many ways and also very different in how they deal with data. We will look at how they execute read queries and see what those similarities and differences are. Part 1: How a MySQL query is prepared and executed. For us to understand how a SQL database differs in running queries we…

business objectives, and it is utilised during analysis and reporting. It is simply a central database with the sole purpose of analysis and reporting. On the other hand, a Data Mart is much smaller than a Data Warehouse and is applied in a functional area like say finance, where the enterprise adjudges that it would profit from business intelligence. Simply put, a Data Mart can be a single piece or a subset of a Data Warehouse that focuses on a particular enterprise segment. Many Data Marts put…

benefit of using a relational database is that it can help the efficiency of data storage by avoiding data duplication. It is very easy to change data and the format of it which can be added or removed easily. The data can only be stored once so no more than one record change is needed. Relational databases are used to work together by primary key and foreign key as this creates a link between more than one table. By this it can use the attributes and entities within the database which makes it…

Before some of the advancements in technology, all records of information was saved and filed in cabinets for a specific amount of time before they were disposed of. Now most information will be kept within a database. A database is a group of records that comprise of people, places, or things. An example of a paper-based database is a telephone book. A telephone book has information of phone users in a specific location. Each user is listed by name, address and number. The listed…