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What is a simple attribute in dbms?
database simple attritbute
How are the simple coding of php with database?
Working with mySQL databases: <?php // Connects to the database mysql_connect(servername,username,password); // Inserts into a database mysql_query(INSERT INTO table(cat1, cat2, cat3) VALUES(one,two,three)); ?>
What is primary key constraint?
Primary Key is a Constraint Used to avoid Duplicate entries in database table and you define primary key the column doesn't allow NULL values.
Is the primary key field?
In a relational database it is used as a way to uniquely identify a record in a table. It also allows tables within the database to reference the specific record within the table. For example, a common practice is to have the database automatically determine the Primary Key with an auto-incrementing value starting at 1 upon inserting each new record. The reason for uniquely identifying the record is there could be cases where the data between two records are exactly the same, but they need to be separate as they do represent different things. For example, let's say you have a database containing the name of a person "John Smith". What would happen if you added "John Smith" into the database multiple times without a Primary Key? By providing the Primary Key as shown below, you can now reference the correct "John Smith". Id Name 1 John Smith 2 John Smith
What is simple predicate?
The KEY word in the predicate part of the sentence. It is not the WHOLE predicate. The simple predicate in a sentence is also known as the verb or verbs. The SIMPLE Predicate is not all the other words that are found in the predicate
