Recursion is used in quicksort and merge sort.
The quick sort and merge sort algorithms are based on the divide and conquer algorithm which works in the quite similar way.
In the both algorithm, the larger problem is divided into smaller one until you find the solution later we will combine all smaller solutions into final solution.

→ A NATURAL JOIN is a JOIN operation that creates an implicit join clause for you based on the common columns in the two tables being joined. Common columns are columns that have the same name in both tables.
→ A NATURAL JOIN can be an INNER join, a LEFT OUTER join, or a RIGHT OUTER join. The default is INNER join.
→ The SQL OUTER JOIN returns all rows from both the participating tables which satisfy the join condition along with rows which do not satisfy the join condition. The SQL OUTER JOIN operator (+) is used only on one side of the join condition only.

→ The Facebook API is a platform for building applications that are available to the members of the social network of Facebook.
→ The API allows applications to use the social connections and profile information to make applications more involving, and to publish activities to the news feed and profile pages of Facebook, subject to individual users privacy settings.

→ In a star topology, each device has a dedicated point-to-point link only to a central controller, usually called a hub.
→ The devices are not directly linked to one another.

→ Disc: A filled circle
→ Circle : An unfilled circle
→ square : A filled square

→ A linker is a computer utility program that takes one or more object files generated by a compiler and combines them into a single executable file, library file, or another 'object' file.
→ A loader is a major component of an operating system that ensures all necessary programs and libraries are loaded, which is essential during the startup phase of running a program.
→ It places the libraries and programs into the main memory in order to prepare them for execution.

→ Destructors are used to de-allocate the memory that has been allocated for the object by the constructor.
→ Unlike constructor a destructor neither takes any arguments nor does it returns value. And destructor can’t be overloaded.

→ The basic function performed by a computer is the execution of a program. The program which is to be executed is a set of instructions which are stored in memory.
→ The central processing unit (CPU) executes the instructions of the program to complete a task.
→ The major responsibility of the instruction execution is with the CPU. The instruction execution takes place in the CPU registers

From the dependencies A→ B and B→ H, we can imply A→ H by using transitive dependency

The sequential device loads the data present on its inputs and then moves or “shifts” it to its output once every clock cycle, hence the name Shift Register.

Declaration syntax is
Struct tag_name
{
Datatype variable_name;
Struct tag_name *pointer_variable;
};

Micro-operations perform basic operations on data stored in one or more registers, including transferring data between registers or between registers and external buses of the central processing unit (CPU), and performing arithmetic or logical operations on registers

→The numeric values should be declared without double quotes.
→The String values should be enclosed within double quotes(")
→Date and Time variables should be enclosed within hash symbol(#)

→ The left-shift operator (<<), which moves the bits of shift-expression to the left.
→ The bit positions that have been vacated by the shift operation are zero-filled.
→ For example a=5 and equivalent binary value is 101 and shifting one bit left side means the result binary value is 1010 whose decimal value is 10

Inserting an employee without SSn because SSn is key to the table.

Negative numbers are represented in 2’s complement form.
The binary equivalent of 24 is 0000 0000 0001 1000
One’s complement is 1111 1111 1110 0111 (Flipping the bits 1 by 0 and 0 by 1)
Two’s complement is 1111 1111 1110 1000 (adding 1 to the LSB bit)

Statements b and d are correct.
Random Access Memory (RAM) –
→ It is also called as read write memory or the main memory or the primary → memory.
→ The programs and data that the CPU requires during execution of a program are stored in this memory.
→ It is a volatile memory as the data loses when the power is turned off.

ROM
→ Stores crucial information essential to operate the system, like the program essential to boot the computer.
→ It is non-volatile memory.

→ Data cleansing or data cleaning is the process of detecting and correcting (or removing) corrupt or inaccurate records from a record set, table, or database and refers to identifying incomplete, incorrect, inaccurate or irrelevant parts of the data and then replacing, modifying, or deleting the dirty or coarse data.
→ Data cleansing may be performed interactively with data wrangling tools, or as batch processing through scripting.