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In a job interview with a branch manager of a bank that operates in multiple Canadian provinces and the Yukon, you learn that all of the information is captured in real time in a single operating database. In addition, all of the reporting is done from a single data warehouse using SAP Business Intelligence software. Due to the bank's reliance on databases, the branch manager asks you the following questions to gauge your understanding of databases.
1. Operating database includes a Customers table and a Loans table. List some of the fields in each of these tables and indicate the key field in each table. What is the relationship between these two tables?
2. What actions will you be able to perform on the operating database using the bank's database application? Explain the relationship of the data warehouse to the business intelligence tools?
4. Bank's senior management will be using SAP business intelligence software for strategic decision making. Give an example of a strategic decision that the bank's senior management may make and the information that may be used for this decision.
What is the most significant feature that does not directly map into programming language structures? Why? Association, since there are complex types of association, like as qu
What is the difference among a primary index and a secondary index? Primary Index: A primary index is an ordered file whose records are of fixed length along with two fields.
Self-Join: In a self join a table is joined with itself. Let consider the following sample partial data of EMP table EMPNO ENAME MGRID
Two-way Associations Mostly, associations are travel in both directions, although not usually with same frequency. There are three approaches for the implementation. In
Single-Valued Dependencies A database is a collection of related information and it is therefore inevitable that some items of information in the database would depend on some
Explain degree of relation? Degree of a Relation - The degree or arity of a relation is the number of attributes n of its relation schema.
An employee record has the following structure struct employee { int eno; char name[22]; float salary; char dept[10];}; (i) Calculate the record size R in bytes.
Explain the rules for creating a labelled precedence graph for testing view serializability. Ans: A schedule S is view serializable if it is view equivalent to a ser
1. Define each of the following IN YOUR OWN WORDS: (a) File: (b) Record: (c) Field: (d) Primary Key: (e) Secondary Key: 2. A travel agency wants t
Implementation of association as an object Implement as a separate association object, independent of either class, as in Figure. An association object is a group of pairs
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