DATABASE FOR DUMMIES PDF DOWNLOAD!
Looking for books about database development and database management? Browse our entire For Dummies online collection and find the perfect how-to book. Database Management System (DBMS). – add, remove, update records. – retrieve data that match certain criteria. – cross-reference data in different tables. Building a system in Oracle or some other relational database product does not automatically make it a relational database. Similarly, you can design a perfectly.
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Which is where this friendly guide comes in.
From data modeling methods and development tools to Internet accessibility and security, Database Development For Dummies shows you, step-by-step, everything you need to know about building a custom system from the ground up.
Model data accurately Design a reliable functional database Deliver robust database for dummies databases on time and on budget Build a user-friendly database application Put your database on the Web In plain English, author Allen Taylor acquaints you with the most popular data modeling methods, and he shows you how to systematically design and develop a system incorporating a database and one or more applications that operate on it.
Important topics he explores include: About the Author Allen G.
Its purpose is to uniquely identify each row in the database, and therefore, two rows can not have the same primary key value. You can explicitly select every single row by just knowing its primary key. database for dummies
Database design Creating an efficient table structure consists of breaking down your fields into simpler and simpler components. You should not need to save database for dummies same data in two different tables. When defining an app, it's important to keep in mind and ask database for dummies questions like, "What kind of information do we want to store?
Cardinality The relationships between the entities need to be defined, and the cardinality of each relationship.
The cardinality shows how one side of the relationship e. One player can, in this case, belong database for dummies one and only one team while one team could include many different players.
This creates a many-to-1 relation, M: A foreign key is a key used to link two tables together.
Part 1. Databases for beginners - What is a database? What is PostgreSQL? | ElephantSQL
It's a field in one table that uniquely identifies a row of another table or the same table. We database for dummies now add some extra complexity to the design. A player can participate in a game, and a game can have many players.
We do get a many-to-many M: N relationship between players and games. In a relational database design, a direct many-to-many relationship between two tables database for dummies not allowed.
You need to break apart the many-to-many relationship into two one-to-many relationships.
You need to use something called a "join table" or "reference table". Each record in the "join table" would have the foreign key fields of the two tables it is joining together.
However, we will not go into these terms in this article. Our task is to create a simple database structure for our information, where it's flexible and easy to extract useful information.
Database Development For Dummies
Set up your database It's time to set up a test database and perform some actions on it. The plan option you want to use depends on your needs. Database for dummies this tutorial guide, we will use the free plan Tiny Turtle so that everyone has a chance to complete the guide.