Plasmodium falciparum is a protozoan parasite that causes an infectious disease known as malaria. P. falciparum is the most severe strain of the malaria species correlated with almost every malarial death. [1] The other 3 species that cause malaria include: P. vivax, P. ovale, and P. malariae.
To set the value of a Boolean attribute, such as disabled, you can specify any value. An empty string or the name of the attribute are recommended values. All that matters is that if the attribute is present at all, regardless of its actual value, its value is considered to be true.
When declaring a variable, you can specify a default value using the DEFAULT clause as in line (1). Line (2) shows the declaration of a variable of the Boolean data type with a default value of FALSE. Line (3) shows that a SET statement can be used to assign a single variable value. Variables can also be set by executing a SELECT or FETCH statement in combination with the INTO clause as shown in line (4).