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What is Oracle Process? Explain any four processes started by Oracle.
Oracle Process is as follows: SMON: The System Monitor carries out a crash recovery while a crashed instance is begin up again. It also cleans temporary segments. PMON: The Process Monitor checks if a user procedure fails and if so, does all cleaning up of resources in which the user process has acquired. DBWR : The Database Writer writes dirty blocks from the database buffer to the data files. How several DBWn Processes are begins is determined through the initialization parameter DB_WRITER_PROCESSES. DBWR also writes the actual SCN with the Block. LGWR : The Log Writer writes the redo log buffer from the SGA to the online redo log file.
Explain ODBC? ODBC - Open DataBase Connectivity (ODBC) enable the integration of SQL along with a general-reasons programming language.
design a generalization specialization hierarchy for a motor vehicle sales company. the company sells motorcycles, passenger cars, vens and buses.
how to find entities
A full discription of the new, a discription of its components, and the bebefit it will provide a company. A disscussion of the information usedin the system. A disscussion of any
Discuss deferred update technique of recovery. What are the advantages? Ans: The deferred update methods do not physically update the database on disk till after a transact
What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
What is a hash index? A hash index organizes the search keys, with their associated pointers, into a hash file structure.
Explain the term High level DML? High level DML A high-level or non-procedural DML permit the user to specify what data is needed without specifying how it is to be acquired.
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Differentiate between Procedural and non procedural languages ? Procedural and non procedural languages - A procedural language specifies the operations to be performed on th
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