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Atomicity: Either all functions are laid out or none are. Users could not have to think about the effect of incomplete operations. DBMS ensures this by undoing the functions of incomplete operations.
Aggregation: A concept which is needed to model a relationship between relationships and a collection of entities. It is used when we require express a relationship among relationships.
Name the three major groups of files on disk that devolve a database in Oracle There are three major groups of files on disk that devolve a database.
The most important of these are the database folders where the actual data insides. The control files and the redo logs support the properties of the architecture itself. All three groups of files must be open, present, and available to Oracle for any data on the database to be utilized. Without these files, you cannot operate the database, and the database administrator has to answer some or the entire database needs a backup, if there is one.
With the linear commit protocol, sites are connected in a chain, and the subtransaction at the left-hand end of the chain initiates the protocol. Propose a crash recovery protocol
It is not possible to make an ABAP/4 program, which having only Subroutines. False. We can make ABAP/4 program, which having only Subroutines.
explain three types of internet risks to the consummers whent he business system is data dependent. how can we minimise these risks
The ABC Bank authority now wants to create a database for their customers. So you are requested to modify your program of Assignment A3 as follows. The main program first displa
Give two profit of Reuse of Code. Reusing the implementation . Place existing class directly inside a new class. The new class can be made up of any number and type of the oth
Although how will the system recover The selection of REDO or UNDO for a transaction for the recovery is completed on the basis of the state of the transactions. This state is
Draw the precedence graph of the following schedule and determine whether the schedule is serializable. (Note that all instructions, except lock and unlock, are omitted. We assume
What is Trigger? Trigger: A database trigger is procedural code which is automatically executed in response to specific events on a particular table in a database. Triggers can
#question benefits and limitations of data models..
please i request for your assistance in developing a case-based online phone repair
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