Download Database Design for Mere Mortals (3rd Edition) by Michael J. Hernandez PDF

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By Michael J. Hernandez

The number one effortless, common-sense consultant to Database layout! Michael J. Hernandez’s best-selling Database layout for Mere Mortals® has earned around the world recognize because the clearest, easiest way to profit relational database layout. Now, he’s made this hands-on, software-independent instructional even more uncomplicated, whereas making sure that his layout method remains to be proper to the newest databases, purposes, and top practices. step-by-step, Database layout for Mere Mortals ® , 3rd variation, exhibits you the way to layout databases which are soundly established, trustworthy, and versatile, even in smooth net purposes. Hernandez courses you thru every thing from database making plans to defining tables, fields, keys, desk relationships, company ideas, and perspectives. You’ll research functional how one can enhance facts integrity, easy methods to keep away from universal errors, and while to damage the rules.

Coverage includes

Understanding database varieties, versions, and layout terminology

Discovering what sturdy database layout can do for you—and why undesirable layout could make your existence miserable

Setting ambitions to your database, and reworking these ambitions into actual designs

Analyzing a present database so that you can determine how you can increase it

Establishing desk buildings and relationships, assigning fundamental keys, surroundings box standards, and establishing views

Ensuring definitely the right point of knowledge integrity for every application

Identifying and setting up company rules

Whatever relational database structures you utilize, Hernandez may also help you layout databases which are strong and reliable. by no means designed a database sooner than? Settling for insufficient established designs? operating latest databases that want development? begin right here.

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Extra resources for Database Design for Mere Mortals (3rd Edition)

Example text

In data access mode, select Named query and click OK. Chapter 4: Using Data Flow Transformations Download CD Content 52 Chapter 4: Using Data Flow Transformations Chapter 4: Using Data Flow Transformations 53 Overview After completing this chapter, you will be able to: • Understand how data flow is constructed in a package. • Understand the function of data flow transformations and when to use them. • Create a new SSIS project and add a data flow task to it. • Use Conditional Split, Derived Column, and Multicast transformations to aggregate, merge, distribute, and modify data.

At design time, the properties of a connection manager describe the physical connection that Integration Services creates when the package runs. For example, a connection manager includes the ConnectionString property that is set at design time; at run time, a physical connection is created, using the value in the ConnectionString property. Many tasks use connections. For example, an Execute SQL task (that runs SQL statements) requires a connection to a relational database. The sources and destinations in package data flows use connections to extract and load data.

56 Chapter 4: Using Data Flow Transformations Chapter 4: Using Data Flow Transformations 57 Other Transformations SSIS includes the following transformations to export and import data, add audit information, count rows, and work slowly with changing dimensions. • Export Column This transformation reads a file name from an input column and inserts data from another column in the same row into the specified file. • Import Column This transformation reads a file name from an input column and inserts data from the specified file into a new output column for the same row.

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