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What do you mean by lossiess join in dbms?
what do u mean by lossiess join in dbms
What is tuples in sql?
Tuple is a collection of one or more attributes or rows present in a table.
What is a tuple in a database?
An arbitrary group of fields within a database record. Usually has some meaning in the context of the record. For example a 3-tuple in an address record might be the fields that contain the first, middle and last names of the person in the address field.
What is mvd in dbms?
multivalued data
What is meant by data consistency in DBMS?
sdfsfas
Tuple in dbms?
rows are called tuples
What are rows in dbms?
In DBMS the data is stored in the form of table . Each row in DBMS is known as tuple.
What is the cordinality of dbms?
the number of tuple in a relation is called the cordinality of a relation?
What is the difference between relational tuple calculus and domain calculus?
Relational tuple calculus has its variables range over tuples, where domain relational calculus ranges its variables over the field values, or domain elements. Both types of calculus are subsets of first order logic.
What is functional dependency in DBMS?
A key is a set of attributes that uniquely identifies an entire tuple, a function dependency allow us to express constraints that uniquely identify the values of certain attribute.
What is storage organization for relations in DBMS?
storage organise means how data is stored in database.in data base data is stored inform of table,which is also known as relation.some organisation are known as *table *row *tuple *degree *cardinality
What is meant by a database row What 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.
What is relation instance in DBMS?
In DBMS, a relation instance refers to a particular set of data rows within a database table at a given point in time. It represents the actual values stored in the database for that specific table. Each row in a relation instance corresponds to a record or tuple within the table, containing values for each attribute.
What is the difference between tuple and attribute?
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
What are highlights of DBMS?
NA_ what are highlights of advanced DBMS what are highlights of advanced DBMS what are highlights of advanced DBMS
What is another name for a tuple?
cell
How do we tuple initialize a class or structure?
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);} // ... };
