MYSQL DATABASE PDF
This is the MySQL Tutorial from the MySQL Reference Manual. .. to create and use a simple database. mysql (sometimes referred to as the “terminal. It documents MySQL through , as well as NDB Cluster releases Overview of the MySQL Database Management System. MySQL is the world's most popular open-source database. also explain how to perform some basic operations with MySQL using the mysql client. Notes.
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MySQL features. This manual describes features that are not included in every edition of MySQL ; such features may not be included in. MySQL i. About the Tutorial. MySQL is the most popular Open Source Relational SQL Database Management System. MySQL is one of the best RDBMS being. MySQL Tutorial in PDF - Learn MySQL from basic to advanced covering database programming clauses command functions administration queries and usage.
If you start another mysql client and do a SELECT during the transaction before the commit or rollback , you will not see the changes. Alternatively, you can also disable the so-called autocommit mode, which is set by default and commit every single SQL statement. In an inner join of two tables, each row of the first table is combined joined with every row of second table.
This is important, as in some queries, you are interested to have result on every row on the left table, with no match in the right table, e.
Peter runs a small car rental company with 10 cars and 5 trucks. He engages you to design a web portal to put his operation online.
A vehicle, identified by the vehicle registration number, can be rented on a daily basis. The rental rate is different for different vehicles.
A customer can rental a vehicle from a start date to an end date. The initial database contains 3 tables: We shall begin with the first table called " products " with the following columns having data types as indicated and rows: The types are: We use fixed-length string for productCode , as we assume that the productCode contains exactly 3 characters.
To insert a row with values on selected columns only, use: Arithmetic Operators You can perform arithmetic operations on numeric fields using arithmetic operators, as tabulated below: NULL cannot be compared. SET command, with the following syntax: Use with extreme care!
Records are NOT recoverable!!! You need to provide the path absolute or relative and the filename. If you use another delimiter, e. For example, to restore the southwind backup earlier: One-To-Many Relationship Suppose that each product has one supplier, and each supplier supplies one or more products.
For example, to list the product's name in products table and supplier's name in suppliers table , we could join the two table via the two common supplierID columns: Many-To-Many Relationship Suppose that a product has many suppliers; and a supplier supplies many products in a so-called many-to-many relationship. One-to-one Relationship Suppose that some products have optional data e. You can restore from the backup by running the script either: Foreign Key A foreign key of a child table is used to reference the parent table.
We define the foreign key when defining the child table, which references a parent table, as follows: Cannot delete or update a parent row: Indexes or Keys Indexes or Keys can be created on selected column s to facilitate fast search. In MySQL, indexes can be built on: The valid range is ' You can set a value using the valid format e. The range is '' to ''. YEAR 4 2: The range of years is to Use DATE type for year outside this range.
The range is ' Don't use year 2 anymore. From MySQL 5. Insert values manually using string literals.
MySQL replaces with all zeros. Might not work in MySQL 5. If all the operations succeed, changes are committed to the database. If any of the operations fails, the entire transaction is rolled back , and no change is made to the database. In other words, there is no partial update. A transaction transform the database from one consistent state to another consistent state.
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Changes to a transaction are not visible to another transaction until they are committed. Committed changes are durable and never lost. For the initial phase, the web portal shall provide these basic functions: Maintaining the records of the vehicles and customers. Inquiring about the availability of vehicle, and Reserving a vehicle for rental.
Database The initial database contains 3 tables: You need to insert a rental record. List all rental records start date, end date with vehicle's registration number, brand, and customer name, sorted by vehicle's categories followed by start date.
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List the vehicles rented out on '' not available for rental , in columns of vehicle registration no, customer name, start date and end date. List all vehicles rented out today, in columns registration number, customer name, start date, end date. Similarly, list the vehicles rented out not available for rental for the period from '' to ''. List the vehicles registration number, brand and description available for rental not rented out on '' Hint: You could use a subquery based on a earlier query.
Similarly, list the vehicles available for rental for the period from '' to ''. Similarly, list the vehicles available for rental from today for 10 days. Foreign Key Test: Try deleting a parent row with matching row s in child table s , e.
Try updating a parent row with matching row s in child table s , e. Remove 'GAF' from the database Hints: We will provide a hyper link to generate the PDF from the table data. You will be given a popup asking to save the generated pdf file. Then you can choose your convenient location for saving the file. Also we need to generate HTML table in view. We will add our additional functionality for generating pdf report from MySQL table here.
We will generate pdf report from our MySQL database using Codeigniter but Codeigniter does not provide any built-in functionality for generating pdf report. So we need to use third party library for pdf generation.
One such library can be downloaded from the URL tcpdf library. You may delete examples and tools directories from tcpdf directory.
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A primary key is called a simple key if it is a single column; it is called a composite key if it is made up of several columns. For example, an unique number customerID can be used as the primary key for the customers table; productCode for products table; isbn for books table.
Next, remove the supplierID column from the products table.
There are several ways to add data into the database: Implement discount on weekday Monday to Friday, except public holiday: SET command, with the following syntax: The valid range is ' These default header and footer functions basically print tcpdf logo, author information etc in the generated pdf files.
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