Tài liệu Activity 9.4: Identifying Data Access Requirements ppt

Activity 9.4: Identifying Data Access Requirements In this activity, you will first identify the optimal data access method to use in a given situation. Next, you will analyze the data access method selection in a scenario. Objectives After completing this activity, you will be able to: ! Identify the appropriate data access method for a given set of requirements and constraints. Before You Begin This activity includes both small group tasks and class discussion. Prerequisites There are no prerequisites for this activity. Materials There are no materials for this activity. Time to complete this activity: 15 minutes followed by a 10 minute discussion. 74 Activity 9.4: Identifying Data Access Requirements Exercise 1: Identifying a Data Access Method for a Scenario (10 minutes) ! Identify data access requirements 1. Participate in small groups as assigned by the instructor. 2. Read each scenario below. 3. Identify which data access method best meets the needs of the scenario. 4. Write your answers below. After completing the above steps, you will discuss your responses with the class. The instructor will write the class consensus on a flip chart. Scenarios A All data for a new order entry system is going to be stored in Microsoft ® SQL Server ™ and accessed by Microsoft Excel for querying and by the Web system for additional lookups. All data is entered through the Web. New orders are also sent by sending e-mail to the appropriate sales representatives. B A custom application that requires e-mail to be generated and copies to be stored in a repository for easy access in the future. Solution A B Activity 9.4: Identifying Data Access Requirements 75 Exercise 2: Analyzing Technology Selection (5 minutes) ! Analyze technology selection 1. Participate in small groups as assigned by the instructor. 2. Validate the feasibility of the solution given in the scenario. 3. Make any comments in the space below. After completing the above steps, you will discuss your responses with the class. The instructor will write the class consensus on a flip chart. Scenario The company has decided to use existing order code from an old Microsoft Visual Basic ® application. All the data access code is DAO based. The new database will be housed in Microsoft SQL Server 7.0. Analysis _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ THIS PAGE INTENTIONALLY LEFT BLANK . Activity 9. 4: Identifying Data Access Requirements Exercise 1: Identifying a Data Access Method for a Scenario (10 minutes) ! Identify data access requirements. Activity 9. 4: Identifying Data Access Requirements In this activity, you will first identify the optimal data access method to use