Database代做编程辅导:CSC570 Database Management System

这次是实现一个Database Management System的Design,用MySQL数据库即可。

由于是基础设计的,E-R图是必不可少的,设计方案还需要满足数据库的2NF, 3NF, BCNF, 4NF这四个范式。

LE PHUONG撰写

Data Base Project

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现在提到了代写服务,肯定很多人都不会觉得陌生,就算是国内也是有着专业代写作业的服务行业的,能够为有需求的学生提供很多的帮助,不过其实代写机构在国外会更获得学生的支持,这是因为国外的学校对于平时的作业要求比较严格,为了获得更高的分数顺利毕业,不少留学生就会让代写机构帮忙完成作业,比较常见的作业代写类型,就是计算机专业了,因为对于留学生来说这个技术对于Machine Learning或者AI的代码编程要求更高,所以找代写机构完成作业会简单轻松很多,那么代写机构的水平,要怎么选择才会比较高?

1、代写机构正规专业

不论是在什么情况下,选择正规合法经营的机构肯定是首要的操作,这也是为了避免自己在找机构的时候,出现上当受骗的现象,造成自己的经济出现损失,带来的影响还是非常大的,所以需要注意很多细节才可以,所以在这样的情况下,代写机构的选择,也要选择在经营方面属于正规合法的类型,这样才可以保证服务进行的时候,不会出现各种问题,也可以减少损失的出现,而且正规合法也是代写机构的合格基础。

2、代写机构编程能力

作业的难度相信很多人都很熟悉,特别是对于AI深度学习或者是人工神经网络这种算法来说,因为要对SVM、Design Tree、线性回归以及编程有很高的要求,可以说作业的完成要求非常高,因此才会带动代写机构的发展,找专业的代写机构,一般都是会有专业的人员帮忙进行作业的完成,因为这类型的作业对专业要求比较高,因此代写机构也要具备专业能力才可以,否则很容易导致作业的完成出现问题,出现低分的评价。

3、代写机构收费情况

现在有非常多的留学生,都很在意作业的完成度,为了保证作业可以顺利的被完成,要进行的相关操作可是非常多的,代写机构也是因为如此才会延伸出来的,在现在发展也很迅速,现在选择代写机构的时候,一定要重视收费情况的合理性,因为代写作业还是比较费精力的,而且对于专业能力要求也高,所以价格方面一般会收取几千元至万元左右的价格,但是比较简单的也只需要几百元价格。

4、代写机构完成速度

大部分人都很在意代写机构的专业能力,也会很关心要具备什么能力,才可以展现出稳定的代写能力,其实专业的代写机构,对于作业完成度、作业完成时间、作业专业性等方面,都是要有一定的能力的,特别是在完成的时间上,一定要做到可以根据客户规定的时间内完成的操作,才可以作为合格专业的代写机构存在,大众在选择的时候,也可以重视完成时间这一点来。

现在找专业的CS代写机构帮忙完成作业的代写,完全不是奇怪的事情了,而且专业性越强的作业,需要代写机构帮忙的几率就会越高,代写就发展很好,需求量还是非常高的,这也可以很好的说明了,这个专业的难度以及专业性要求,才可以增加代写机构的存在。



Consider an organization of your choice (e.g., manufacturing company, bank, accounting system, video rental, medical applications, retail store, Online_shopping,…) for which you are assigned to design and develop a database. Note that this is a real world database and therefore all entities, attributes, and relationships, and assumptions must be reasonable.

  1. Define the information content of your database.
    • Define a set of entities and appropriate attributes for each entity. Minimum 10 entities.
    • Define a set of relationships that might exist between/among entities and attributes. Such relationships may include one-to-one, one-to-many and many-to-many associations.
    • Define a set of constraints that may be imposed on data.
  2. Define an E-R Diagram for your database design.
  3. Define a relational schema for your database design.
    Make sure that you have both one-to-many and many-to-many associations.
    • Define one or more realistic key(s) for every relation scheme. Use both simple and composite keys.
    • Define a realistic set of Functional / Multi-Valued Dependencies (when appropriate) for every relation scheme.
    • Check whether your relational schema is in 2NF, 3NF, BCNF, 4NF.
    • Put your relational schema in the highest normal form that is possible.

Note that, every relation scheme should be in a specific normal form in order to have the relational schema in that normal form.

NOTE: Please provide a detailed explanation for every question when appropriate.

Requirement

Implementation: Create your database using Oracle, or MySQL, or… to Perform the following operations.
You are required to execute SQL queries that include the following operations. For each query, provide the SQL statements along with the output. For each of the following, try different SQL statements (i.e., using one relation, more than one relations,…).


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Create tables

Insert

  • insert one tuple into a table
  • insert a set of tuples (by using another select statement)
  • insert involving two tables

Delete

delete one tuple or a set of tuples: from one table, from multiple tables.

Update

update one tuple or a set of tuples: from one table, from multiple tables.

Create View

  • based on one relation and more than one relation:
  • operate on View (i.e., select, insert, delete, update,..)


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Also, create at least 4 different practical/useful triggers (written in MySQL) for your database to perform the following tasks:

  • enforcing referential integrity
  • enforcing attribute domain constraints
  • creating database log
  • gathering statistics

Use MySQL and ColdFusion to create a Web-based application to enable the user to do the following operations:

  • Add a record
  • Delete a record
  • Update a record
  • Query (at least 3 select statements on one relation)

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在此对LE PHUONG对本文所作的贡献表示诚挚感谢,她在山东大学完成了计算机科学与技术专业的硕士学位,专注数据分析、数据可视化、数据采集等。擅长Python、SQL、C/C++、HTML、CSS、VSCode、Linux、Jupyter Notebook。

 
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