What are metadata? Why are they important to sys- tem developers? What is the purpose of developing an identifier for an entity? What is meant by a concatenated identifier? Explain the distinction between identifying and nonidentifying relationships. Describe the three-step process of creating an inter- section entity. Describe the primary activities of the design phase of the SDLC. Describe the three primary strategies that are avail- able to obtain a new system. What circumstances favor the custom design strategy? What circumstances favor using outsourcing to obtain the new system? What is meant by customizing a software package? Explain the client–server architecture. Explain the difference between a symmetric encryp- tion algorithm and an asymmetric encryption algorithm. What is the purpose of the hardware and software specification? What do you think are the most important security issues for a system? What is meant by authentication? What is its role in securing transactions? What are three fundamental parts of most user interfaces? Why is content awareness important? Why are interface standards important? Why do we prototype the user interface design? What type of interface evaluation did you perform in the “Your Turn 9.1”? Why is using a top-down modular approach useful in program design? Describe the primary deliverable produced during program design. What does it include and how is it used? What does a data couple depict on a structure chart? A control couple? Where does the analyst find the information needed to create a structure chart? What is the purpose of the structure chart in pro- gram design? What is the most popular kind of database today? Provide three examples of products that are based on this technology. How does the multidimensional database store data? Why should you consider the storage formats that already exist in an organization when deciding on a storage format for a new system? Describe the metadata associated with the physical ERD 23. What does a data couple depict on a structure chart? A control couple?