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define according to the levels of abstraction the schema at the intermediate level is called ans as per to the levels of abstraction the schema at
what is a disjoint less constraintans it needs that an entity belongs to no much more than one level entity set disjoint less constraint needs
the clause in sql which specifies that the query result should be sorted in ascending or descending order based upon the values of one or much more
determine the rule that a value of a foreign key should appear as a value of some particular table is called a ans referential constraint
determine the language that needs a user to specify the data to be retrieved with no specifying exactly how to get it isans non-procedural
1 which model is used to store data in tree structuresans hierarchical model is used to store data in tree
1 determine that the checkpoints are a part of ans checkpoints are a part of recovery
define an operator that a relational algebra does not haveans relational algebra does not have aggregation
define a property that is not a property of transactionsans concurrency is not a property of
1 which relational algebra operations do not need the participating tables to be union-compatibleans join is the relational algebra operations that
1will you advise that your organization uses open source software and why 2why is it important for business managers to have a basic
i have to create a database about anything of my choice it has to contain 4 queries and 4 forms it can be anything as simple as a shoe inventory with
draw an entity relationship diagram erd for the following situation a company has a number of employees each employee is identified by an
smart alex catering sevice sacs is a company offering top class catering staff for prestigious events the company employs approximately 200
you are required to write a report which evaluates two of the following issues in relation to your case study databaseasecurity issuesbperformance
the er diagram clearly showing the additional tables you have implementedsql table creation scripts for the tables you have set upsql scripts showing
a use case diagram giving a pictorial overview of user requirements and brief use case descriptions as the case study contains only an outline of a
code an oracle database trigger to enforce the constraint that an employee can never change his or her
i am doing research in this area especially in sime join and join efficacy when several relations have been queried relations located in different
create an e-r diagram usuing graphical dipicted software that could theoritically be used in resturant
a database to track your progress in your college program will track your progress towards graduation a database that has information containing the
add generation capabilities andor tailor the built-in functionality of generator this enables you to produce all the test data for the mysql tables
use again the ge flight quest data and build on the work done for homework 1 and 2 the goal is to create a classification model which classifies
develop a database broker framework to implement a persistence mechanism for the domain objects involved in the use case dealt with in question