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What are the differences among MySQL_fetch_array(), MySQL_fetch_object(), MySQL_fetch_row()?
Mysql_fetch_object returns the result from the database like objects while mysql_fetch_array returns result as an array.
This will permit access to the data via the field names E.g. using mysql_fetch_object field can be accessed as $result-
>name andusing mysql_fetch_array field can be accessed as $result->[name].
mysql_fetch_row($result):- where $result is the result resource come back from a successful query executed using the mysql_query() function.
Illustration:
$result = mysql_query("SELECT * from students);
while($row = mysql_fetch_row($result))
{
Some statement;
}
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Enumerate or state the steps in creating a relevant database of a shop.
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What is disadvantage of multiple inheritances? There is potential ambiguity if the similar variable or method can be inherited from more than one superclass.eg: student class m
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
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