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What are primary keys and foreign keys?
Primary keys are the unique identifiers for every row. They must have unique values and cannot be null. Due to their significance in relational databases, Primary keys are the most fundamental of all keys and constraints. A table can have only one Primary key. Foreign keys are both a method of ensuring data integrity and a manifestation of the relationship among tables.
Follow these steps: 1. Produce XML from the DOM document tree. 2. Serialize the generated DOM document to a StringWriter. 3. Call toString on the StringWriter and pass it into
What is page frame? An area in the main memory that can hold single page is called as page frame.
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Explain the Benefits of Interpreter? The benefit of an interpreter though is that it doesn't need to go through the compilation stage during which machine instructions are gene
What is a recursively enumerable language? The languages that is accepted by TM is said to be recursively enumerable (r. e) languages. Enumerable means that the stri
TARGET = "_self" "_self" puts the new document in the same window and frame as current document. "_self" works the same as if you hadn't used TARGET at all.
Chaining: In this method, instead of hashing function value as location we use it as an index into an array of pointers. Every pointer access a chain that holds the element having
The Concept of Process Informally, a method is a program in execution, behind the program has been loaded in the main memory. However, a method is more than just a program code
Q. Why we need linker? The linker: Joins assembled module in one executable program, Produces an .EXE module and initializes with special instructions to facilitate
Give difference between assembler and compiler. Assembler: It is the translator for an assembly language of computer. An assembly language is a low-level programming language
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