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For this application, we will consider IBM DB2 catalog data (i.e., metadata) for IBM's enterprise-class servers running the z/OS (formerly OS/390 or MVS) operating system. One of the outcomes of this question is to give you some experience in actually exploring the contents of what's in an RDBMS catalog. This will also give us a head start in thinking about query optimization-a major part of this course.
Go to this Web site:
SYSIBM.SYSCOLUMNS
SYSIBM.SYSCOPY
SYSIBM.SYSDATABASE
SYSIBM.SYSDBRM
SYSIBM.SYSINDEXES
SYSIBM.SYSINDEXPART
SYSIBM.SYSPLAN
SYSIBM.SYSTABLEPART
SYSIBM.SYSTABLES
SYSIBM.SYSTABLESPACE
SYSIBM.SYSTABLESPACESTATS
In this course, we will frequently encounter a program that is a crucial component of an RDBMS. That program is called an optimizer. It tries to determine the optimal access path when accessing (e.g., retrieving) data in a database. An optimizer obtains statistics or metadata (i.e., data about data) from a data repository in the DBMS called a catalog. The catalog will have information about the columns of tables and indices; the number of rows in a table; the numbers, types, and (possibly) distribution of values for columns in the tables; and literally hundreds of other pieces of information.
Project Description: We have an encrypted HSQL Database which we want to change into csv format. HSQL DB . We have java application (jar file) which reads that database but n
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Where does view definition stored? A view definition is permanently stored as part of the database.
Build a database application for a sports league. Assume your application is to keep track of teams and equipment that is checked out to teams. Explain the steps that is needed and
Which two files are used during operation of the DBMS? Data dictionary and transaction log are two files used during operation of the DBMS.
(a) Explain briefly the three parts of a relational Model. (b) Contrast the following terms with an appropriate example: (i) stored attribute v/s derived attribute (ii) en
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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 flights into "on-time" (you can de
Company XYZ is an advertising company. It has its own website but the search facilities offered are not reliable. The company is willing to invest to acquire new machines and sof
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