Project Deliverable 3: Database and Programming Design
A quality database design makes the flow of data seamless. The database schema is the foundation of the relational database. The schema defines the tables, fields, relationships, views, indexes, and other elements. Envisioning the primary business function should facilitate creating the schema and how that information should flow throughout all areas of the firm. ("Strayer, iCampus," n.d., p. 1).
Database Design Basics
The database itself is a compilation of information organized so that it can easily be accessed, managed, and updated. Computer databases typically contain a collection of data records or files that allow users the ability to read/write access, specify report generation,
…show more content…
More than likely the data is spread across several physical files. However, the database sees the data as being located in a single data repository. By organizing information in a single logical repository, it allows for easy handling and querying of the data. Traditional file systems required the programmer to specify when and how the data was to be retrieved (McCaldin, 2015, p. 1).
One of the greatest benefits of having a database is that data can be shared or secured among many users or applications. Because the data resides in one place, there is more control and accountability over how the data is managed (McCaldin, 2015).
Database system design can be extremely time-consuming as it takes sophisticated software to create and control it. The design process becomes less user-friendly as it takes a more extensive knowledge of how to use it. The standard of an excellent database is one, which is complete, integral, simple, understandable, flexible and
…show more content…
One rule is required when creating database tables. Several constraints related to specific standards are in use in creating a database schema. To be classified as a relational table it must first have a primary key. A primary key cannot accept null values, and a table can only have one primary key. A foreign key refers to a set of one or more columns in another table that refers to the primary key. There aren't any unique codes, configurations, or table definitions you need to place to officially “designate” a foreign key. Unlike the primary key, a foreign key can take null values, and a table can have more than one foreign key ("PF, FK," n.d., p.
Data objects can model relational data or advanced data types such as graphics, movies, and audio. Smalltalk, C++, Java, and others are objects used in object-oriented data. The object-relational is a combination of relational and object-oriented databases. Traditional and advanced data types can be used to construct database management systems. These systems can connect to a company’s website and update records as needed. Database Approach The main purpose of a database is data storage that can be stored and retrieved when needed. A popular common language called structured query language (SQL) is used to store and retrieve data in relational database. This language enables the systems to run a report or modify data or remove the data from the database. A database management system (DBMS) controls all aspects of a database, this is not limited to the creation, maintenance, and use of database. The DBMS ensures proper applications are able to access the database. An important purpose of a DBMS is to maintain the data definitions (data dictionary) for all the data elements in the database. It also enforces data integrity and security measures. Data Models Data models provide a contextual framework and graphical representation that aid in the definition of data elements. In a relational database, the data model lays the foundation for the database and identifies important entities,
At this stage, the specifics of the scope and the general content of the project has been identified and is the first step in database development. It illustrates the overall picture of organizational data at a high level of abstraction. In addition,
Database is defined as “the collection of information organized in such way that a computer program can quickly select the desired pieces of data.” (Haithcoat, n.d.). In today’s technological world most of the processes is automated where database plays an important role to manage the data across a system. A database can be considered as an electronic filing system. Traditional databases are organized by fields, records, and files. A field is a single element of information; a record is one complete set of elements; and a file is a collection of records. To manage these data across the database system, DBMS came into play and the basic role was to create the management of information across all the data. DBMS plays a critical and integral component of most successful GIS and used to store, manipulate and retrieve data from the database. Although the range of DBMS structures used in GIS includes inverted list, hierarchical, network and relation design.
This must be in your own words and not copied and pasted from the original source. Include the purpose of the database and the subject matter it covers. This may be four or five sentences; and
Prior to designing my database, I will have a clear understanding of the data. This will allow me to determine the purpose of the database. Once all information is
Campbell, R. J. (2015). Database Design: What HIM Professionals Need to Know. AHIMA. Retrieved from http://library.ahima.org/xpedio/groups/public/documents/ahima/bok1_024637.hcsp?dDocName=bok1_024637
A Database Management System or (DBMS) is an essential tool for any organization or company in today’s modern world. A DBMS is “a group of programs that manipulate the database and provide an interface between the database and its users and other application programs” (Stair & Reynolds, 2011, p. 189). So in choosing the right DBMS there are many factoring issues with choosing the right one for the company or organization. When choosing a DBMS one has to think about how the system will ultimately help the company or organization with day to day processes and the goals of the company or organization.
There are several important steps to consider when designing a database, as a well-designed database should be deployed and not only support the accuracy and integrity of business information but also avoid redundant data and assist with has enterprise level reporting tasked. If we analyze the
Course Description This course covers database concepts. Topics include data analysis, the principal data models with emphasis on the relational model, entity-relationship diagrams, database design, normalization, and database administration. Policies Faculty and students will be held responsible for understanding and adhering to all policies contained within the following two documents: • • University policies: You must be logged into the student website to view this document. Instructor policies: This
A database is used to store collections of information and easily retrieved at a later date. The larger the amount of information, the more organized a database needs to be. A database is created with the requirements and needs of current and future users and most importantly, with past users and their information. Out book defines database systems as “an organization of components that define and regulate the collection, storage, management, and use of data within a database environment”. (Database Systems, 2013)
I am utilizing the Relational Database in my proposal. According to Murthy, data in a relational database, is mainly represented in tables and is considered to be an assortment of relations. A relational database is similar to a spreadsheet, in that a relational database organizes data in tables. The table is then made up of rows and columns. A row is also known as a record or tuple, and a column is also known as called a field or attribute. Using a relational database allows me to efficiently store huge amount of data, and effectively retrieve selected data. Tables in the relational database are distinguished by a primary key, which confirms that “no
Policies and Procedures Manual, if applicable, this will help as it has all the requirements on what the database should look like,
Having and using a relational database prevents the duplication of data. Instead of saving lots of information within one table, you could divide up the table into information, for example in a college database you might have some tables with pupil names, age and addresses in a primary field like a pupil ID number. The field could then be related to another table which could be enrolment as a pupil “enrols” onto a “course” which would then be linked on another table called “teacher” which would decide the “room” they would be teaching in. When the table is made it has to be connected to other tables to be made into a database. Databases help to maintain precision, availability, usability, flexibility in an organisation
The conceptual schema for patient care as illustration of all of the data types required to manage the health-care process, whether using a relational, a hierarchical, or a combination of database structural designs, or an object-oriented structural database design. The structural design of a database required to be able to provide rapid retrieval of information for differnt patients and have the proficiency to adapt to changing information needs of growth and new technology; yet the primary purpose of the database structural design was to instrument the conceptual schema. It is necessary to first develop a model of the database that defined its functional requirements, its technical requirements, and its structural design to properly build a database. A formal description is expected of the database model, a conceptual schema of all the data generated in the enterprise, and how all of the data were linked. Thus the users of a medical database are expected to define its practical necessities as to exactly what the database and its database-management system to do. Since a medical database usually a part of larger medical-information system, the functional requirements of the medical database needed to be well-matched with those of the medical enterprise of which it was a part. Whether a medical database
Databases can be used by businesses for managing accounts, inventory, personnel information, customer information, and any other record keeping needs. Phone companies have extensive databases for keeping track of customer’s calls for monthly statements, likewise with mobile phone companies. Banks transactions are all recorded in databases. The DMV has records of all drivers and motor vehicles. IRS databases contain income related information of everyone in the country. Ultimately, databases are everywhere. One can only wonder how many records relating to you are stored across what is now a forest of databases.