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How number and data type field are different in base?
In a database, a number field is specifically designed to store numeric values, which can be used for mathematical operations, while a data type field encompasses a broader range of data types, including text, dates, and binary data. The number field typically supports various numeric formats, such as integers or floats, while the data type field categorizes the nature of the data being stored, defining how it can be manipulated and what operations can be performed on it. Essentially, while all number fields are a type of data type, not all data type fields are limited to numbers.
How you can change data type in PHPwrite a script in PHP that change the string data type in numeric data type?
If you will read typecasting on php, you will know more on this. <?php $str = "10"; $num = (int)$str; ?>
What is the difference between varchar and nvarchar?
The difference between varchar and nvarchardatatypes is that Nvarchar stores UNICODE data. If you have requirements to store UNICODE or multilingual data, nvarcharis your choice. Varchar stores ASCII data and should be your data type of choice for normal use.
What will happen if you change the data type from currency to text in terms of calculations?
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What is default values of different primitive data types?
in integral data types default value=0 in decimal type default value is 0.0 in boolean default value is fa
What is the meaning of data types?
Operand data type is one of the two components of computer language and expressions. It is the manipulated object or the instruction that specifies which operation is to be performed.
List and briefly define the possible states that define an instruction execution?
The possible states that define an instruction execution are as follows: Instruction address calculation - Determine the address of the next instruction to be executed. Instruction fetch - Read instruction from its memory location into the processor. Instruction operation decoding - Analyze instruction to determine type of operation to be performed and operand to be used. Operand address calculation - If the operation involves reference to an operand in memory or available via I/O, then determine the address of the operand. Operand fetch - Fetch the operand from memory or read it in from I/O. Data operation - Perform the operation indicated in the instruction. Operand store - Write the result into memory or out to I/O.
What are operands?
Every instruction contains to parts: operation code[opcode],and operand. The first part of an instruction which specifies the task to be performed by the computer is called opcode. The second part of the instruction is the data to be operated on.,and it is called operand. The operand[or data]given in the instruction may be in various forms such as 8-bit or 16-bit data, 8-bit or 16-bit address, internal register or a register or memory location.
What does plus plus stand for in computer programming?
++ is an operator that increments the operand. The value of the operand in the expression is incremented first if the ++ is before the operand. The value of the operand in the expression is the same value if the ++ is after the operand.
Which part of a machine language instruction specifies data on which an operation acts?
False, Op code specifies the operation to perform, the operand specifies the data.
What is operand difference between operand and operator?
Simply defining, in an expression like A+B A is an Operand B is an Operand Plus is the Operator in between
What do mean by operands in microprocessor?
An opcode is a single instruction in assembly language. An operand is the data it does something with.For example, in "MOV r0, #0C", MOV is the opcode ("move this value into this register"), while r0 (register 0) and #0C (the number 12) are operands.
What is meaning of byte ptr in 8086?
byte ptr is an assembler directive that says the following operand is an address of a byte.
What is the use of 'size of' in c programming?
The sizeof operator is used to determine the length of its operand (in bytes). The operand must be a type or an object of a type (a variable). The operator is a constant expression and therefore executes at compile time. As such there is no runtime overhead in repeated use of the sizeof operator.
What is data manipulation instruction?
Uses the ALU in the CPU to carry out these instructions. One of the operand must be kept in theaccumulator or reg. A for 8-bit operations. For 16-bit operations the operand is kept in a registerpair HL. or we can say data manipulation instructionvirtual all data operations use:accumulator for byte operationsor carry bit for bit operationslogical operations: AND OR XOR NOT called compelementbit operation:carry bit,many bit in register.
What does SUBB stand for?
Subtract with borrow.Subtracts source operand and borrow flag from destination operand.
Can both operand 1 and operand 2 be memory in 8086?
Yes, both operand 1 and operand 2 can be in memory in the 8086. An example is the string copy primative, which takes source and destination operands to be memory pointed to by DS and ES.
