cell
n-tuple?? or Richard
TUPLE : Is the "ROW" in a table
The formal name for a row is a tuple.
In database there are no. of records stored in it. These records are stored in table . Row in this table is known as a tuple. So tuple is basically a row.
TUPLE : Is the "ROW" in a table and ATTRIBUTE : Is the "COLUMN" and it can also be called as "ATTRIBUTE". Annapurna table is collection of attributes ..... attribute is nothing but property tuple is the collection of information abt the attributes of table for single instance
Consider the following structure: struct X { int a; double b; // ... }; Here we could initialise with a std::tuple<int, double>. To achieve this we simply define a constructor that accepts the required tuple: #include<tuple> struct X { int a; double b; X::X (std::tuple<int, double>& t): a {std::get<0>(t)}, b {std::get<1>(t)} {} // ... }; Note that any constructor that has one argument is known as a conversion constructor, in this case converting from tuple to X. It is usually a good idea to declare such constructors explicit, particularly if you also provide the complementary conversion operator (from X to tuple). #include<tuple> struct X { int a; double b; explicit X::X (const std::tuple<int, double>& t): a {std::get<0>(t)}, b {std::get<1>(t)} {} operator std::tuple<int, double> (void) const {return std::make_tuple (a, b);} // ... };
In a relational schema, each tuple is divided into fields called attributes. Each attribute corresponds to a specific piece of data within the tuple.
rows are called tuples
4 tuple
A tuple is a collection in Python that is ordered and cannot be changed (immutable) after creation. # Creating a tuple my_tuple = ("apple", "banana", "cherry") # Accessing elements print(my_tuple[0]) # Output: apple For more Python tutorials, visit jiten.fun 🚀
Supple and tuple!
In a relation we have number of tuple R ={t1,t2,t3.....tn}, nd they follow integrity constraints nd each tuple has a primary key pk.if any of the d two tuple have same attribute. for instance t1=t2 then its pk wud be same too.. but this violates the key constraint.. hence duplicacy not allowed in tuple... enjoy Rijo Rajan