Database

D1 - 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…

software in the market to use. A person who is related with Relational Databases must consider the advantages and disadvantages of them and try to get the most efficient one. Many reasons to handle data is to keep information of something important which may improve a work that you are involve. In the following paragraphs, I will talk about general information of RDBMS and I will discuss and evaluate alternatives Relational Database Management Systems and the advantages and disadvantages that…

Database Administrator The career I have chosen to research is database administrator. According to a report released by the U.S Bureau of Labor Statistics, “Employment of database (DBAs) is projected to grow 11 percent from the 2014 to 2024, faster than the average for all occupations. Growth in this occupation will be driven by the increased data needs of companies in all sectors of the economy”(1). The 11 percent might not seem like a lot compared to the specific field but if you really…

that can be easily delineated into respective tables to make Database Management Systems capable of utilizing the data effectively. With normalization, information can be confidently accurate in any system and it is to a business’ loss if the fundamentals of normalization are ignored. So what does Normalization look like? There are four levels called first, second, third and fourth normal forms. First Normal (1NF) requires the database to have no repeating groups and must identify all the key…

transactions and business to fail. Databases need to handle all of these issues with ease. The data size will increase dramatically daily if a system like AutoXchange and Covisint runs successfully. The problem is that the relational database management system finds it challenging to handle huge data volumes. The solution to the problem is that the relational database management system needs to add more central processing units as well as to add more memory to the database management system in…

EX: The database in a hospital contains data such as name of the patient, address, disease and contact number. Definition of Database: The term database is determined as data collection in an organized manner and every data present is related to each other in some other way. Definition of Database Management Systems (DBMS): DBMS is a software that consists of collection of programs that are used to maintain and control the database. The main purpose of DBMS is to construct the database for the…

What is a relational database? It is a database that stores the information about both data, for example for a person detail that is link with their car details that they have bought it from the company. The data and relationships are showed in an entity which is in a flat, two dimensional tables. We would use a relational database in a company such as a car company so when they want to store their customers information and what car did they buy, they use a relational database which stores the…

A database object in a relational database is a data structure used to either store or reference data. The most common object that people interact with is the table. Other objects are indexes, stored procedures, sequences, views and many more. When a database object is created, a new object type cannot be created because all the various object types created are restricted by the very nature, or source code, of the relational database model being used, such as Oracle, SQL Server or Access. What…

Hierarchal Database “In the network model, the data are represented by collections of records and relationships between data are represented by links. This structure holds for the hierarchical model as well. The only difference is that, in the hierarchical model, records are organized as collections of trees, rather than as arbitrary graphs.”(http://codex.cs.yale.edu/avi/db-book/db6/appendices-dir/e.pdf, 17-10-2014) This database model use rules as each child has one parent and each parent can…

When creating an Oracle database one must consider what type of performance and needs you will need to keep your Real Application Cluster (RAC) environment operating at peak instances. When an Oracle database spans across multiple instances on different servers with shared data files. When the database spans across several hardware systems but it will appear as a single combined database within the application. Real Application Cluster allows the commodity to be utilized in way that they could…