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Random Access & Sequential Access
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Is it true that wrapping up of data of different types into a single unit is known as encapsulation?
Not quite. Encapsulation means to combine data and the methods that work upon that data into a single unit (an object), such that access to both the data and methods is restricted in a controlled manner. Data-hiding is fundamental to encapsulation.
Data gathering methods?
Different ways to gather data include:SurveyTelemarketingWeb searchHistorical analysis
If a data-item is declared as a protected access specifier then it can be accessed?
A class method or attribute (data item) that is declared protected can be accessed only by methods of the same class or by methods of derived classes of the class.
Define access specifiers in object oriented programming?
One of the techniques in object-oriented programming is encapsulation. It concerns the hiding of data in a class and making them available only through its methods. In this way the chance of making accidental mistakes in changing values is minimized. Java allows you to control access to classes, methods, and fields via so-called access modifiers. The access to classes, constructors, methods and fields are regulated using access modifiers i.e. a class can control what information or data can be accessible by other classes. To take advantage of encapsulation, you should minimize access whenever possible.Java provides a number of access modifiers to help you set the level of access you want for classes as well as the fields, methods and constructors in your classes. A member has package or default accessibility when no accessibility modifier is specified.Access Modifiers1. Private2. Protected3. Default4. PublicPublic is the most liberal access modifier and Private is the most restrictive access modifier. NB there is no such thing as an 'access specifier' in Java, only access modifiers.
What are the Access data types and how they are used?
In Access and in databases in general each field in a database table is of a certain data type. The data type determines what type of data a field can hold. A field of the text data type can hold text, a field of the number data type can hold numbers and a field of the data/time data type can hold date and time values.Access actively checks what type of data is entered into a field and Access will disallow the entry of data into a field that doesn't conform to the field's data type. Access won't allow you to put text into a field of the Number data type, for example.So, data types are a way to restrict the entry of data into a field. Internally, the database uses different strategies for the storage and retrieval of different data types.
Is it true that wrapping up of data of different types into a single unit is known as encapsulation?
Not quite. Encapsulation means to combine data and the methods that work upon that data into a single unit (an object), such that access to both the data and methods is restricted in a controlled manner. Data-hiding is fundamental to encapsulation.
What are the methods in collect data?
There are five different methods in collecting data. The methods in data collect are registration, questionnaires, interviews, direct observations, and reporting.
What are the various options of data storage and methods of access for a SAN?
Nothing
Explain different methods of identifying project data?
Stakeholder interviews: Engaging with project stakeholders to gather information on project data needs. Data inventory: Documenting and categorizing all available data sources related to the project. Data analysis: Using analytical tools and techniques to extract relevant data from various sources. Data mapping: Creating visual representations of data flows, relationships, and dependencies within the project.
Which methods can you use to export data from access 2007?
Export to XML. Export to another Access database. Export to HTML.
What are the different methods in gathering data?
There are many different methods for gathering data depending upon the industry and the objective. Some of the methods include direct Interviewing, indirect or questionnaire, registration method, and experimental method.
Data gathering methods?
Different ways to gather data include:SurveyTelemarketingWeb searchHistorical analysis
What is Private public and protected?
They are access modifiers used in c++ under the concept of Object Oriented Programming. They're generally used within a classPublic: The data members and methods having public as access specifier can be accessed by the class objects created outside the class.Protected: The data members and methods declared as protected will be accessible to the class methods and the derived class methods only.Private: These data members and methods will be accessible from the class methods only, not from derived classes and not from objects created outside the class.
If a data-item is declared as a protected access specifier then it can be accessed?
A class method or attribute (data item) that is declared protected can be accessed only by methods of the same class or by methods of derived classes of the class.
Differentiate between Direct Access and Sequential Access methods?
the difference between them is that direct access, such as a DVD allows you to go directly to a specific piece of data using an index, whereas sequential access is when data is chronologically stored on a VCR tape or Magnetic tape, you must go through all the data before you reach the data your looking for.
What is data controller?
Data controls are tools in programming that are used to access data in different formats from a database. To manage access to data stored a database, programmers use data control languages (DCL's).
Is Access designed for relational data and is Excel best for flat data structures?
They are for different programs for different purposes: Access is a database (basically single user), Excel is a spreadsheet program.
