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Database Programming

Databases are collections of tables that maintain and display information, often collaboratively; this information can be used for interaction with an application or gaining general knowledge. Questions about database engines and modifying or using them belong in this category.

8,803 Questions

What are the goals of management information system manager in an organization?

provides information that organizations require to manage themselves efficiently and effectively.Management information systems are typically computer systems used for managing. The five primary components: 1.) Hardware,2.) Software,3.) Data (information for decision making), 4.) Procedures (design,development and documentation), and 5.) People (individuals, groups, or organizations). Management information systems are distinct from other information systems because they are used to analyze and facilitate strategic and operational activities.

What keyword in an SQL statement's WHERE clause is used to select rows based on a range of values?

BETWEEN

For example:

SELECT columnName FROM tableName WHERE columnName BETWEEN '1' AND '20'

Physical and conceptual structure of mis?

Any information system will make use of the following physical components:

a) Hardware: The equipment and devices for inputting, outputting, secondary storage, processing as well as communications in the system.

b) Software: The set of programmes to facilitate processing procedures; it includes systems software, applications software and the model base.

c) Data Base: The organisational data to be used by various software programmes is usually stored in the form of files and database on the physical storage media such as computer tapes, disc drives, floppy diskettes.

d) Procedures: The operating procedures documented in the form of physical manuals constitute an important part of MIS components. These documents could be divided into three major types: Operating Manuals, User Manuals, and Systems Manuals.

e) Operating Personnel: The manpower operating these information systems include systems managers, systems analysts, data administrators, programmes, data entry and computer operators.

Processing Functions

The major processing functions in information systems include the following:

a) Processing of business transactions: To capture, collect, record, store and process the events of business interest, so that their effect should be carried over to the organisational performance records.

b) Updation of master files: The effect of these transactions is carried over to the status files of the organisational performance. Master files at any given time shall reflect the status of any entity after having incorporated the impact of up-to-moment transactions.

c) Generation of information reports: After having processed the transactions and updation of master files, the information reports are generated so as to assist the managers in their decision-making.

d) Processing of interactive enquiries: On-line information processing systems provide the facility of responding to the business queries raised by managers on the data files - both master as well as transaction files.

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List out the database implicit properties?

The main implicit properties of a database are listed below:

1. A database represents some aspect of the real world, sometimes called

the miniworld or universe of discourse (UoD). Changes to the miniworld

are reflected in the database.

2. A database is a logically coherent collection of data with some inherent

meaning.

3. A database is designed, built, and populated with data for a specific

purpose.

What is the system uses for transaction processing system?

payment gateway is used for transaction processing system.Examples are Emvantage payments private limited, PayU, CCAvenue and many more

What are the advantages of a weighted scoring model for management?

1.) If the weighted scoring model is on a spreadsheet, the weights can be changed on the fly to reflect any changes that may have occurred in your project. 2.) By supplying percentages to key aspects of importance in your model, you can accurately ascertain the value after computing the averages in said weighted model.

What four main types of action are involved in database briefly discuss each?

Defining a database involves specifying

the data types, structures, and constraints for the data to be stored in the database.

Constructing the database is the process of storing the data itself on some storage

medium that is controlled by the DBMS. Manipulating a database includes such functions

as querying the database to retrieve specific data, updating the database to reflect changes

in the miniworld, and generating reports from the data. Sharing a database allows

multiple users and programs to access the database concurrently.

What is difference between object and entity?

A database object is represented as one of the following:

database, schema, table, column, primary key, and foreign key

A database Entity is:

An entity is a thing or object of importance about which data must be captured.

All things aren't entities - only those about which information should be captured.

Information about an entity is captured in the form of attributes and/or relationships. If something is a candidate for being an entity and it has no attributes or relationships, it isn't an entity.

Database entities appear in a data model as a box with a title. The title is the name of the entity.

Difference between a manual payroll system and a computerised payroll system?

a manual payroll is a system wherein a company computes payroll manually.It is a state where the human resource or the manager doesn't need any computer while the computerized payroll system is a system wherein a certain company uses a computer or a program for payroll to calculate the payroll easily. Computerized payroll system can help for the accounting department to work easily.

1 What was the key weakness that Škoda was able to identify?

Skoda able to identify Brand Position was one of the weakness for Skoda in the highly competitive fragmented market by positioning the brand as low budget or low quality vehicles which caused Skoda to get 1.7% of the market share, because the company used to manufacture cars of poor image of quality, design, assembly, and materials, which leaded customers to perceive the brand image as poor image for majority consumers compare to other competitors like Ford, Peugeot, and Renault. By looking business model, example General Electric business model that say business organisation can determine its self by looking factors like Business Strengths (strong or average or weak) in the market and industry attractiveness (high or medium or low) at that market. According to that model that means the Skoda had probably weak business strength and its industry attractiveness was probably strong in the market.

The analysis gave clear direction to Skoda that there is need to Partnership with Volkswagen by raising strategic alliance between themselves which leaded the Skoda to change the negative image in the market. Also Skoda management did understood that they need to correct old perceptions by stop being defensive in promotional campaigns and change market message as Skoda owners need to be happy and contented with their cars, Also convincing users that Skoda cars were great to own and drive.

Read more: http://www.ukessays.com/essays/education/international-business-case-study-in-skoda-company.php#ixzz2MF0Rsa6D

ER Diagram for purchase and inventory system?

An ER diagram for a purchase and inventory system typically includes entities such as Product, Supplier, Customer, Order, and Inventory. The Product entity would have attributes like ProductID, Name, and Price, while Supplier would include SupplierID, Name, and ContactInfo. Relationships would show that a Supplier can provide multiple Products, a Customer can place multiple Orders, and each Order can include multiple Products, affecting Inventory levels. The Inventory entity would track quantities of each Product available, linking back to the Product entity.

Maximum length of a varchar field in SQL Server?

12,500 is the maximum length of a varchar field. The nVarchar field has the same limitation however you will use twice the data store space with an nVarchar as it is effectively the same as a varchar with the exception that it will store data required for international character sets. If you support a multi-language system then you will want to use a nVarchar character type for these fields.

What is hierarchical structure in dbms?

In hierarchical database structure, data elements are linked together as an inverted tree structure. there's a root data element, below the root ,there are subordinate elements, each of which has its own subordinate elements and so on. It can have multiple levels. Data elements have parent-child relationship. A parent data element can have more than one subordinate elements, but a child can be connected with only one parent. Its limitation is it cannot provide flexibility in data access. because every data element can be accessed through a definite path from the root data element. All the relationships between data elements should map properly when tree structure is first designed.this database model is used in several database applications because data elements of several applications can be organized as a hierarchical tree structure.

What are three anomalies that are likely result to data redundancy?

The three types of anomalies likely to show up are: Insertion, Deletion, and Update anomalies.

An example of a pre-digital database is?

everything is digital bases, books,articles homework all that is digital database.

Meant of transaction and important limits in DBMS?

Transactions' Importance:

Users can submit transaction and can think of each transaction as executing by itself.

A transaction might commit after completing all its actions, or it could abort(or be aborted by the DBMS) after executing some actions.

What is a special database that holds key information about your system including the device drivers?

A computer is made up of many technical systems. The registry is a special database that holds key information about your system, including the device drivers.