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There are a number of specialized positions in systems analysis For example, a systems design analyst may design a number of alternative systems according to the system requirements drawn up by the analyst From these the best is then chosen A management information systems analyst works specifically to provide decision-making information to management through the development and implementation of information systems The operations research analyst solves difficult problems in systems analysis through the use of mathematical techniques A methods and procedures analyst develops and implements improved clerical methods as part of the development of new or improved systems A network analyst designs the integration of system communications components In general, the larger the information systems department of the organization, the more specialized the positions More examples of this specialization include systems maintenance and systems support activities Systems maintenance analysts are responsible for monitoring the information systems once they are implemented They determine when changes are needed in the system and refer the matter to analysis and design personnel Systems support analysts perform a variety of activities that support systems development; for example, their responsibilities may include preparing and updating organization charts, designing forms, managing records, and preparing and distributing corporate policies and procedures The areas of systems maintenance and systems support may have their own managers, depending on the size of the organization Because of the costs associated with new systems development, many companies choose to convert their existing systems to accommodate the new technology This sometimes requires systems professionals with mastery of more than one hardware platform (type of computer equipment), operating system (software that runs the basic operations of the computer), or programming language Rarely do in-house people have such knowledge or ability Companies turn then to consulting firms that employ conversion specialists Many companies have undertaken massive systems overhauls to decentralize their applications and take advantage of network technologies This decentralization results in easier access to information, more efficient service, and quicker response to the market New networks and databases at the user level might be involved What systems professionals are required to pull this off Systems analysis has produced its own job titles for years Several years ago wizards, witch doctors, and magicians were the new job titles for the star performers in what the Index Group, a Boston consulting organization, dubbed a starship environment The witch doctor is an analyst who has a thorough.

n part 1, we focused on preinstallation planning and the installation process itself. The next four chapters will focus on postinstallation configuration tasks, including securing an installation, configuring a SQL Server instance, using policy-based management, and configuring data.

Authentication modes Secure networking Least privilege Auditing and Change Data Capture Data encryption

Fig 7-5

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As you learned in chapter 1, successful database administration involves designing and executing tasks that ensure that a database meets four key criteria: security, availability, reliability, and recoverability. This chapter is dedicated to the first of these criteria, security, and we ll address this topic from a range of perspectives. Before we begin, it s important to note the difference between a secure environment and a convenient one. A convenient environment, in which developers, users, and database administrators are free to go about their business unhindered, is usually an insecure one that often ends in disaster, intentional or otherwise. In contrast, a secure environment is one in which complaints about how long it takes to get stuff done aren t uncommon. The key is striking the balance between security and productivity.

Designing and implementing a secure database environment is hard work. Trying to lock down an existing, insecure production environment almost always involves things breaking as part of the process. As a result, the job is often placed in the too hard basket, with systems left in an insecure state. The key to a good security model is prioritizing its development and implementation from the very beginning, and rolling out the model in all environments well before the production environment is installed. Fortunately, there are some proven best practices in securing SQL Server, and they are the focus of this chapter. We begin with coverage of the various authentication models before looking at locking down network security and implementing least privilege. We then focus on some of the new security features in SQL Server 2008: Auditing, Change Data Capture, and Transparent Data Encryption. The chapter closes with a brief look at the dangers of SQL injection attacks.

The area under this curve can be written as a sum of similar rectangles With this view, the area under the curve is

As you saw in chapter 4, installing SQL Server presents us with two options for login authentication: Windows Authentication Mode or SQL Server and Windows Authentication Mode (commonly called Mixed Mode). Regardless of the installation choice, you change this setting at any future point using sp_configure, or as shown in figure 6.1, by right-clicking on a registered server instance in SQL Server Management Studio, choosing Properties, and then clicking the Security page in the Properties dialog.

Figure 6.1 The Security page of a server s properties dialog lets you change a variety of security-related settings, including the authentication mode.

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