Beginning Databases with PostgreSQL: From Novice to by Neil Matthew, Richard Stones

By Neil Matthew, Richard Stones

PostgreSQL is arguably the main robust open-source relational database method. It has grown from educational examine beginnings right into a functionally-rich, standards-compliant, and enterprise-ready database utilized by companies around the world. And it's thoroughly loose to use.

Beginning Databases with PostgreSQL bargains readers a radical evaluate of database fundamentals, beginning with a proof of why chances are you'll have to use a database, and following with a precis of what assorted database kinds need to provide when put next to possible choices like spreadsheets. You'll additionally research all approximately relational database layout themes similar to the SQL question language, and introduce center rules together with normalization and referential integrity.

The e-book keeps with a whole educational on PostgreSQL positive factors and capabilities and comprise details on database building and management. Key beneficial properties akin to transactions, saved approaches and triggers are lined, besides the various features new to model eight. that will help you start speedy, step by step directions on fitting PostgreSQL on home windows and Linux/UNIX structures are included.

In the rest of the booklet, we enable you to utilize PostgreSQL beneficial properties on your personal purposes utilizing quite a lot of programming languages, together with C, Perl, Hypertext Preprocessor, Java and C#. Many instance courses are provided within the e-book, and all can be found for obtain from the Apress internet site.

By the tip of the booklet it is possible for you to to put in, use, and successfully deal with a PostgreSQL server, layout and enforce a database, and create and install your personal database purposes.

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Additional info for Beginning Databases with PostgreSQL: From Novice to Professional (2nd Edition)

Sample text

Never try to store repeating groups of data in a single row. The way around this restriction is to do exactly what we did with our orders and customers data: split the data into separate tables. Then you can join the tables together when you need data from both tables. In our example, we used the column customer_id to join the two tables. More formally, what we had was a many-to-one relationship; that is, there could be many orders received from a single customer. Rule Four: Get the Naming Right This is occasionally the hardest rule to implement well.

Viewing customer data from a database with pgAdmin III Accessing Data Across a Network Of course, if we could only access our data on the machine on which it was physically stored, the situation really wouldn’t have improved much over the single spreadsheet file being shared among different users. PostgreSQL is a server-based database, and as described in the previous chapter, once configured, will accept requests from clients across a network. Although the client can be on the same machine as the database server, for multiuser access, this won’t normally be the case.

This is more simply referred to as SQL92. These standards replaced an earlier standard, SQL89. The latest version of the SQL standard is ISO/IEC 9075:2003, more simply referred to as SQL:2003. 135-1992, which is an identical United States standard differing only in some cover pages. There are three levels of conformance to SQL92: Entry SQL, Intermediate SQL, and Full SQL. By far, the most common conformance level is Entry SQL. ■Note PostgreSQL is very close to SQL92: Entry SQL conformance, with only a few slight differences.

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