Beginning Oracle Application Express 4.2 by Doug Gault

By Doug Gault

Beginning Oracle program exhibit 4.2 introduces model 4.2 of the preferred and efficient Oracle program show improvement platform. known as APEX for brief, the platform allows speedy and simple improvement of web-based purposes that make complete use of Oracle Database. the discharge of APEX 4.2 brings huge new Flash and HTML five charting functions, more desirable topics for cellular functions usable from telephones and pills, RESTful internet companies help, more suitable program packaging, and the numerous redesigned wizards provide a brand new and clean consider to the consumer interface.

no matter if you are new to Oracle or an outdated hand who is but to check the waters of APEX, Beginning Oracle software exhibit 4.2 introduces the strategies and top practices you will want to develop into trained with APEX. The publication indicates off the programming surroundings, the utilities and instruments to be had, after which keeps by means of jogging in the course of the means of construction a operating method from the floor up. All code is documented and defined in order that these new to the languages are usually not misplaced. After studying this e-book, strength clients and programmers alike can quick prepare powerful and scalable purposes to be used by means of one individual, via a division, through a complete corporation.

  • Covers brand-new performance in APEX 4.2
  • Provides totally documented and defined instance code
  • Guides you thru making a operating and completely deployable program

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Extra info for Beginning Oracle Application Express 4.2

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After the screen changes, select TICKET_ID (NUMBER) for the primary key. Click Next. 7. You’re not going to create any foreign keys in this table just yet, so leave the defaults and click Next. The Constraints screen in Figure 4-4 allows you to add either Unique or Check constraints to the table definition. You add a constraint by defining the constraint in the Add Constraints region and clicking the Add button to add it to the list. Below the Add Constraints region are two help regions. Clicking the arrow to the left of the region title expands the help and shows the columns you defined in the table and examples of how to code various check constraints.

Start the Create Table Wizard using the Create button. 11. Enter the table name and column definitions based on the ERD and Figure 4-6, and click Next. Figure 4-6. Defining the TICKET_DETAILS table 41 CHAPTER 4 N SQL WORKSHOP The next set of steps is purposefully a bit more vague than the previous ones. You should be used to using the Create Table Wizard by now, but if you need a refresher, just look at the previous steps. 12. Choose Populate from a new sequence for the primary key, select TICKET_DETAILS_ID(NUMBER) as the Primary Key column, and click Next.

The fact that the number is unknown indicates that you should create a table that is a child of the TICKET entity called TICKET DETAIL. This way, you can enter as many detail records as you need. So, you’ve identified three major entities: USERs, TICKETs, and TICKET DETAILs. You now need to think about the attributes of each of these entities and what type of data they will hold. Searching back through the statement of requirements, talking to the technicians about what they track today, and thinking about what types of things you’d want to be able to track during the process of solving a problem, you can identify a number of attributes about your objects.

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Beginning Oracle Application Express 4.2 by Doug Gault
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