Computers And Technology College

Define the summary function, which takes as arguments a database (dict) and a dict of current stock prices. It returns a dictionary (dict or defaultdict) whose keys are client names (str) whose associated values are 2-tuples: the first index is a dictionary (dict or defaultdict) whose keys are stock names (str) and values are the number of shares (int) the client owns. The second index is the amount of money (int) the portfolio is worth (the sum of the number of shares of each stock multiplied by its current price). Assume each client starts with no shares of any stocks, and if a client owns 0 shares of a stock, the stock should not appear in the client’s dictionary. Recall positive numbers are a purchase of the stock and negative numbers a sale of the stock. E.g., if db is the database above, calling summary(db, {'IBM':65, 'Intel':60, 'Dell':55, 'Apple':70}) would return

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All of the following are data providers included with .NET for accessing and manipulating data in databases, EXCEPT ____. Group of answer choices

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Complete Question:

All of the following are data providers included with .NET for accessing and manipulating data in databases, EXCEPT ____.

Group of answer choices.

A. OLE DB

B. ODBC

C. SQL Server

D. Access

Answer:

D. Access

Explanation:

A database management system (DBMS) can be defined as a collection of software applications that typically enables computer users to create, store, modify, retrieve and manage data or informations in a database. Generally, it allows computer users to efficiently retrieve and manage their data with an appropriate level of security.

A data dictionary can be defined as a centralized collection of information on a specific data such as attributes, names, fields and definitions that are being used in a computer database system.

In a data dictionary, data elements are combined into records, which are meaningful combinations of data elements that are included in data flows or retained in data stores.

This ultimately implies that, a data dictionary found in a computer database system typically contains the records about all the data elements (objects) such as data relationships with other elements, ownership, type, size, primary keys etc. This records are stored and communicated to other data when required or needed.

Basically, when a database management system (DBMS) receives data update requests from application programs, it simply instructs the operating system installed on a server to provide the requested data or informations.

Some examples of data providers included with .NET for accessing and manipulating data in databases are;

A. OLE DB: this is an acronym for Object Linking and Embedding Database. OLE DB was designed and developed by Microsoft corporation and it comprises of various application programming interfaces (APIs) used for data access.

B. ODBC: it is an acronym for Open Database Connectivity and it was designed and developed by Microsoft corporation used for data access through structured query language (SQL).

C. SQL Server: it is a domain-specific language server designed and developed for managing the various data saved in a relational or structured database.

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