❖Communication practices: Principle 1 Listen: •Try to focus on the speaker‘s words, rather than formulating your response to those words. •Ask for clarification if something is unclear, but avoid constant interruptions. •Never become contentious in your words or actions (e.g., rolling your eyes or shaking your head) as a person is talking. Principle 2 Prepare before you communicate: •Spend the time to understand the problem before you meet with others. If necessary, perform some research to understand business domain. •If you have responsibility for conducting a meeting, prepare an agenda in advance of the meeting. Principle 3 someone should facilitate the activity: •Every communication meeting should have a leader (a facilitator) 1)To keep the conversation moving in a productive direction, 2)To mediate any conflict that does occur, and 3)To ensure that other principles are followed. Principle 4 Face-to-face communication is best: •It usually works better when some other represen...
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DCL-Data Control Language And TCL -Transaction Control language
DCL-Data Control Language TCL -Transaction Control language DCL-Data Control Language:- The data control language is use to give permition and revoke the permition, To perform any for operation in the database then user need permition like inserting data of reating record deleting data or view record. The record for In data control language there are mainly two command. 1.Greant command 2.Revoke command 1.Greant command:- The Greants command is use to given in the permission to user after that this user perform operation on database generally a grent statement is use by owner of table. When we give permission to that user then this user must be present in the database. Syntax-Grent permission on table name to user name. There are various permission that is given below 2.Revoke command:- W e can reject the permission given to database particulars user with the help revoke command. Syntax-Revoke permission on table name from username. To remove the perm...
What is Relational structure, Table, Attributes, Rows Record, Domain, Super key, Composite key, Candidate key, Primary key, Foreign key
Table:- The table in a database has it unique name in the relational in table consisting Horizontal rows that is also called as Tuple s fore the Vertical columns also called as attributes. Each table row represent a single entity Occurrence withing the entity set. Attributes:- In the above table column represent data stored in it such column is called as attributes. Ex-Name id (column name) every cans a table must have at least one column. The squle standard does not be specify in in only maximum number of column in a table. Rows Record:- In a single row in a relational table which contain all information about. A single entity each horizantal row of student table represent the student record and in the and table there are multiple row. Domain:- The every column in a table has set of data values that are allowed for that column that is called as domain. In a relational table a domain can have a single value or null values .Type...
What is Database Schema
Database Schema Database Schema:-The description of data in terms of data model of called as database schema. Which is specified unique database design and it does not expect to change frequently. A Database schema is the structure of database which represent physical view a logical view and entire database. It define how the data is arranged and how the relations among them are associated. .Types of Schema 1. Physical schema 2. Logical schema 3. View Schema 1.Physical schema :-Physical schema is also known internal schema the design of the database at a physical level is called as Physical schema . How the data is stored in storage is explained at this level 2. Logical schema:- The design of database at logical level is called as logical. The level gives a tabular structure of data 3. View Schema:- It is also known as external schema. The design of database at view level is called as view schema. This generally refer user and database system interac...